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#sibling!seungjoon
onf-headcanons · 3 years
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SIBLING!ONF RANDOM HEADCANONS
Your brothers waiting for you to walk you home (J-US and/or MK version)
You normally take the bus or train to work or school.
That day you had to attend some dinner (maybe your superior retire dinner or your uni professor retiring)
You did inform your family through group chat. Then your brother immediately DM you volunteering to pick you up from station. You mentioned its just a 15 minutes walk from station to home and you promised not to be too late
But as you superior/professor favourite, you cannot bring yourself to leave the event early. So you stayed for a bit but did not attend the second round.
Again you notify you family members about it. Your brother requested you to notify him once you get into the bus/train.
The moment you reached your station its already 12.30am. And you see your brother standing on the street waiting for you
He hasn't noticed you yet because he was looking at the other part of station entrance
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You do kinda worried because you end up being late. (If you are a younger sibling)
And then they noticed you and immediately break into a warm welcome home smile.
Should you are working they will go "Gosaeng hesseo"
Should both of your brothers came from home to fetch you (sibling au universe version), Minkyun noticed you and pats on Seungjun's shoulder to notify him. Then both of them rushed towards you.
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You thanked your sibling for waiting you and picking you up. They might shove a mini hot pack into your hands to fight off the cold weather
Probably Seungjun in a worried tone: Did you had alcohol?
Minkyun would be offering to take your belongings while on the way home.
You and your sibling get to talk about how did the day goes.
Bonus
Seungjun : Hey let's race back home
You probably : ok but wait for me to take my heels off
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kpopfcs · 4 years
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suggestions for older male and female siblings (age wise 23-30ish?) for kang yeosang from ateez? can be full or half siblings! ty for the help~
here you are! hope this helps you!
sister
baek yebin (1997)
kim yoohyeon (1997)
ham saebyeol (1996)
park sooyoung/joy (1996)
jo hyejoo (1995)
kim soyeon/kassy (1995)
song heejin (1995)
shin hyejeong (1993)
joo minhee (1993)
lee yunji (1992)
kang dahye/heize (1991)
go ara (1990)
brother
yang yoseob (1990)
jeong jinwoon (1991)
song seunghyun (1992)
jung younghoon/ooon (1993)
yoo seungho (1993)
yoon sanghyuk/san (1994)
jo yonggeun (1995)
kang seungsik (1995)
lee seungjoon/j-us (1995)
kang daniel (1996)
yoo taeyang (1997)
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rkseungjoon · 5 years
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&&* the siblings spooks
“oh my god… i hate you.” and it’s always a joy hanging out with his sister, honestly. the fact that wasn’t the first time she had said that towards him that day probably said a lot ( the first time was her reaction to his costume, by the way. ) she had made it clear they wouldn’t be hanging out much that night since she’d much rather be seen with anyone else rather than her brother dressed as a minion. seungjoon honestly didn’t get the minion hate.
a ghost kept staring at them, patiently waiting for their answer. apparently, seungjoon didn’t know a single newly released track. “well, that’s not rihanna, for sure!” there’s a sarcastic tone to his voice and that was in no way directed towards rihanna. miss fenty could take the time she needed to release some new music. still, if the artist wasn’t one of the ten he listened to then there was no way they were going to get home by bedtime. “of course it’s not rihanna… it’s in korean.”
his hands raise to his forehead but seungah is quicker than him, somehow. embarrassment truly was powerful. “jesus christ, don’t you ever put that on.” his ‘thinking glasses’ ( which were his minion goggles ) had to be saved for another date. in a second, he reaches for her stamp card. the girl fails to keep up with her original speed and the boy’s face immediately lightens up. he can’t help but laugh and his sister replies with an annoyed look. “we’ll just change cards. if you’re so good you can get it again.”
and so he gives his own card to the girl. it has a single stamp less. the look in seungah’s eyes changes to disappointment and the ghost in charge of the task really seems like they couldn’t be caring less about their small discussion. so seungjoon slides himself back towards the crowd, accepting his victory. “it’s freaking chichi, dude… it’s chichi.”
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onf-headcanons · 4 years
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ONF SIBLING (E-tion and J-US)
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So if you had already known me I tend to keep my hcs flexible. Same goes to this ONF DUO as siblings au. It can be either you are blood related with one of them or even not. Also doable if you are older than them, your birthday are in between them, or even you are the youngest, have fun!
Now this duo is super fun because they share the same family name even though not related. Which makes there is new scenario possibility. All of you related by blood is a very lazy way to open up possibilities for fun hcs.
1. Either you three are not related by blood at all. Changyoon and Seungjoon sharing the same family name are just pure coincidence but from different ancestry
2. Changyoon and Seungjoon are related with the same biological parents but you are from the new parent that married with one of their parent
3. They both you met in young age due to marriage of both of your parent and the parents give birth to you later
4. Either you are related from Changyoon or Seungjoon side and either one of them later joined the family. Confusing? OK example you are Changyoon's sibling by blood and then later Seungjoon joined. Or in reversed, Changyoon joined. (this is for the reader to share same family name with them both)
My recommendation goes to number 3😉. Age gap suggested would be 5 to 7 years (this is absolutely intentional you will know why later) .
I personally think is the most fun one
Common hcs for both of them. I will kind off focus on this part for the double Lees this time.
• Changyoon and Seungjoon always give me the frenemy type of chemistry
• Loud af especially if you three plays game. (The house will be even louder if Hyojin and/or Minkyun joins. So is either you join to fun or rip your ears. But if you happened to the eldest sibling, you will glare at them so that they can be quiet)
• Btw loudest happy birthday song and wishes. It does not matter whose birthday was it, it will still gonna be loud.
• Once them both and you 3 gets really comfortable with each other, or should you 3 grow up together, pranking each other is a definite thing you siblings will do.
• To lend an idea from the modern fantasy au I wrote, maybe once they planked you way too hard and you decided to revenge. You bought a fake bug and then when they are minding their own businesses, you suddenly just random throws the fake bug in front of them
• I could it will be like a cue hint for them that they went overboard pranking you when you pulled the fake bug prank move. So they will make it up by taking you out, buying you food or even timidly asking if you have anything in your amazon/shopping cart
• This household shares the same universe with Hyojin Minseok and Jaeyoung Minkyun households. So you will see Hyojin visiting alot. And Changyoon slowly gets to know about his new younger brother's bff and them 3 hang out comfortably in no time.
• If your bff happens to be the younger sibling from Jaeyoung and Minkyun household, you would see them both often when they drop by to pick their younger sibling.
• Who knows? Maybe you later on develop a crush with those good looking visitors
• Lol. Sorry that i got sidetracked, lets go back to the common hcs.
• Changyoon need time to adjust to new environment and people while Seungjoon is the opposite
• If you are happened to be a cheerfully active type, you easily interact with Seungjoon. But if you are not, they will approach you very cautiously. Maybe Changyoon even enough an introvert himself, will initiate first to show that the nuance of this household is perfectly fine. Especially Changyoon, working very hard to not accidentally step on your emotional landmine
• Changyoon stuttering
• Seungjoon glaring/swearing with his eyes
• It will be a very good contrast if Changyoon and Seungjoon are weak against horror or jumpscares but you being the youngest sibling is perfectly fine about it
• Lol even maybe you are the one who kills bug in the household
• 3 of you have own room because apparently Changyoon has really bad sleep qualities so he prefer to sleep alone and you get your own room too either for the same reason or, you being the opposite sex sibling and your parents thought it's best to sleep separately.
• Either you 3 are related or not, they will be a devoted elder brother. But wont over spoil you.
• Seungjoon giving out critique in a gentle tone. While Changyoon is more on expressing his honest thought that meant well.
• Contrast example : Seungjoon will use phrases of compliment like you did wonderful job, you aced it. But Changyoon will just simply said, you worked hard then just pose you a thumbs up.
• I can totally see Seungjoon and you either helping you with your studies and revisions at the living room while Changyoon just sitting there enjoying the presence of you two. Or, Seungjoon just drags you out to the town library and monitor you. Reason you and Changyoon are having way too much fun with video games.
• Seungjoon will later buy you ice cream as reward.
• Btw if you are born later, this is how it will be when you parents brought the baby you back home.
• Seungjoon is excited to see you while Changyoon is a bit timid but still fascinated at how smol you are
• Maybe when you cried, Seungjoon will be the boy in action to help calm you down while Changyoon lowkey panicking.
• Could be Seungjoon is the type of brother who show you toys and demonstrates to the baby/toddler you just to make you laugh.
• But Changyoon's style would be getting himself a hand puppet, the shark one is his fave, and move the hand puppet around while giving light chomps, making you feel ticklish. Once you start smiling, big bro Changyoon starts smiling too.
• But once them both got the hang of it, they help out parents to take care of you. The type of brothers that won't let go of the younger sibling away from their arms and sight.
• Changyoon follows your mum out and help selected your clothes. And even later when you grow older, you would always go to big bro Changyoon for fashion advice
• Both are very reliable elder siblings when it comes to giving advice.
• I can see if you are leaning to socialising advice, you will go to Seungjoon. For a more inwards self contemplating advice, you will go to Changyoon. Overall they are both good listeners.
• Also, them both singing. I do like the tendency of them singing at home ever since you were born, humming short tunes so that you can sleep when you are still a toddler until you graduated kindergarten. Will elaborate more in below if reader stand in also like singing and dancing
• If Hyojin side as a big brother is more attentive towards younger brother, I can see this two are more attentive if its younger sister. Not that their caring will die down if its a brother but when it comes to a sister, they will be gentler
• Oh,also defo the ones who volunteer to accompany you to prom night
Scenario 1. If you are related with any one of them
• Being Changyoon's sibling, maybe you are a contrast of him. He is a scaredy cat and full of expressions, but you are more of a chill zen type. The one who pushes Changyoon's jaw back up when he was too surprised with his mouth open wide.
• Even though you are Changyoon's sibling, you might team up with Seungjoon and Hyojin to tease Changyoon a bit lol
• If you happened to share the same passion of singing just like Changyoon, you two tend to finish each others lyrics or even try harmonising. Seungjoon will join too once he gets comfortable
• Every year in your birthday card, Changyoon will always write "You are the best, Luv you!" (Taken from Changyoon's "Non choigo ya saranghae"
• Being Seungjoon's sibling, you are also close with Hyojin before Changyoon joins
• Lent from above, you are the one who kills bugs at home because you brother will be using you as shield. And then bluffed that he wanted to train you lol
• And yes, the fake bug prank is legit here
• Even though he is your brother, you would gang up with Changyoon to tease Seungjoon . But you won't go overboard,you two stops the moment he starts his death glare.
• If you happened to share the same passion of dancing with Seungjoon, I can see you two dancing to Taemin's and Shinee's discography alot.
Scneario 2. If you are not related with any one of them.
• Seungjoon is gonna talk to you alot to try to know you more
• There will a lot of cute bloopers and maybe Seungjoon passed through either judging you two being weird or maybe later joins
• Changyoon would try and it will more time compared to Seungjoon but if you share something in common with him, you will get him open up quickly. Maybe tiktok, and then you two filmed tiktok snips together
• If Changyoon and Seungjoon happens to know/acquainted already then things are easier, your sibling only just need to help the other party who is the shy and introverted.
• You might think they are both cold and distant when first meet. Especially Changyoon because of his eyes and how he looks when he is not smiling.
• Pranks in this scenario will be lesser than above. The fake bug prank move won't appear in this scenario
• But both Changyoon and Seungjoon are quite of the unexpected bomb lol they sometimes do weird sounds or weird actions lol but those weird quirks always give you good laugh
• Changyoon works a few part time job and sometimes fall asleep on the sofa at the living room . Will always tiptoe if you found Changyoon sleeping at the living room, snoring
• If you found Seungjoon sleeping, and later found out he is a deep sleeper...
• Cues you and Changyoon maybe lowkey pranking or playing around of loud noises just to try waking him up
• (The similar scene in wake up boys video could totally happen)
• If you happened to be also a light sleeper, you are envious of Seungjoon
• You and Changyoon both will never unsee Seungjoon's face as the orange face meme after Hyojin points it out due to revenging Seungjoon calling him piggy
• You will bond with Seungjoon quickier if you are a Taemin fan
• If you are more of a R&B/soul/hiphop lover, you will bond with Changyoon quicker.
• Amazed at Seungjoon able to take in spicy food.
A/N : sorry that it gotten longer because I side tracked
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onf-headcanons · 3 years
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Sibling au extra/spin off
(I have yet to have the official hcs for this pair of sibling to be done but have a quick Scenario to celebrate Seungjun's birthday)
Its your brother, Seungjoon's birthday and then you received new message notification. It is from the sibling exclusive chatgroup (there is another group where your parents are in)
The moment you click on the notification the image below pops up
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Amazed and curious, you texted your brother
You : What the hell happened? Why is Hyojin's face covered with cake too?
Seungjun : He tried to smear some icing of my face while I was trying to take a selfie. And then I got my revenge😈
Hyojin : Now wait a minute! LEE SEUNGJUN! YOU ARE THE ONE WHO SUGGESTED TO TAKE A SELFIE WITH ICING ON OUR FACE AND THAT WAS SHOT WHEN I WAS NOT READY TO LOOK AT THE CAMERA!!!
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onf-headcanons · 3 years
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More headcanons for Sibling AU
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Setting : Hyojin × Minkyun household (universe 2), you are the youngest (could be the sibling that born later), Seungjun your elder brother's bff. You can check sibling au by browsing masterlist.
Mini headcanons below
Your parents headed for outstation work leaving you 3 at home. They are not worried because your elder brothers are grown up and you are not a toddler or a young child anymore.
You have activities after school/ class in University, maybe a brief shift meeting at part time job so today you are heading home later than usual.
Even though in the family sibling group chat, your brothers volunteered to prepare dinner, you thought they were joking. Because normally they would order fast food for dinner because mum's not in.
You reached home, the moment you opened the door, you saw a familiar pair of sneakers that does not belong to Hyojin nor Minkyun
You could hear 3 familiar voices coming from the kitchen so you head over to the spot once you took of your shoes.
And then you see the images above, your elder brother standing in between his best friend and his younger brother, watching them amazed.
The moment you stepped in, they raise their heads immediately,
Hyojin: oh, you're back. We are making dinner
Minkyun : Are you hungry ?
Seungjun : Hi, Y/N!
Could be that Seungjun is alone today because his parents are at his sister's place.
Seeing Seungjun is the one holding the frying pan, its easy to tell that your elder brother called his friend for help.
Also Minkyun telling you not to worry and they got it handled, also he insists you to leave your belongings in your room first before joining.
You kind of hesitated but the boys insisted you to go wash up before dinner is ready. Seungjun assuring you that they will be fine before you headed to the stairs up to your room.
As you are walking up stairs you could hear both Hyojin and Seungjun yelling at Minkyun for his clumsiness but it's a small matter because they later broke into laughter.
Dinner is ready by the time you head down to join them. They just finished plating and Hyojin was in the middle of typing message to tell you to come down from your room.
You 4 sit down and starts to have dinner.
It was unexpectedly delicious, they are proud of themselves.
Hyojin : we should do this more often
Minkyun is taking a picture and sending them to your parents
While Seungjun is nagging at your brothers that fast food is bad.
You are hungry so you just munch your food blissfully
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onf-headcanons · 3 years
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ONF MEMBERS AS YOUR SIBLING (Hyojin & MK version)
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Either you are related to any one of them prior both families combined through marriage. Or maybe you are the little one who is born later.
Totally doable if you are elder than them, or birthday is actually sandwiched between them (same age as Minkyun but slightly earlier birthday) or even the youngest.
My suggestion would go for the youngest. Either born later or being the younger sibling of any one of the boys.
(Being eldest of them both are pretty fun too but it will totally becomes a love hate relationship lol. So I thought being babied by both of them are not bad after all)
Some common headcanons for all scenario below:
One of the most vocalist family in all sibling au. Also,Hyojin vocal appreciation squad.
Seungjoon drops by alot as if he is adopted by your family and sometimes joins your family stuffs lol
Having pets at home
Either secondhand embarrassment because of Minkyun being funny or being crackhead with Minkyun and later gets nagged by parents lol
But also I should warn you that this is going to be somewhat chaotic duo in the family. High decibel screaming of annoyance and high decibel nagging towards each other are inevitable so rip your ears.
So let's dive in for more
Scenario 1 - you are related to Hyojin, and Minkyun being the new join
Minkyun has no trouble open up, gets comfortable and being a part of the family
Hyojin also tries to welcome his new brother. Even includes Minkyun when he hangs out with Seungjoon
You are very used to Seungjoon in your life, he is just like another brother of yours. Minkyun at first thought Seungjoon is a close relative lol
Either you are also a nagger yourself (if you are elder sibling of them both) or
You are also victim of Hyojin's nagging
But, you also know your blood brother well so you will tell Minkyun to be careful. But he still imploded Hyojin several times. Lucky for him, Hyojin does not hold grudge.
You two face palming at Minkyun's weird antics lol
One example taken from a video where Minkyun is playing at crab legs and Hyojin just look at him like aish this kid and his antics again. And yes you are the one filming it, and you sees Hyojin staring thats why you are chuckling. Minkyun thought it was because you think he is funny. But you sees a bigger picture.
Sometimes you would side on Minkyun when Hyojin being mischievous (and it might lead to weird how is your fave person battle between them if you are the youngest)
Probably Hyojin goes , hey I am your brother
Minkyun goes, but I am his/her brother too!
Minkyun going out alone to feed stray animals. At first you and Hyojin were like well, Minkyun has his own life and friends. But then you two noticed Minkyun at an alley when you two are heading home from groceries.
There is a kitten that is very much attached to Minkyun. And he is worried that his new family won't let him keep it. (Maybe Minkyun's side parent did mention that your family never have history of having a pet, thats why Minkyun can only feed it secretly)
You and Hyojin decided to persuade your parent. Thankfully both parents agreed.
Minkyun being a massive helper taking stuff from higher places. It could be he sees you trying take stuffs by standing on a ladder, he would rush over to help holding the ladder (even though its very stable). Maybe low-key nagging at you why you did not ask him for help.
Minkyun instant faves Hyojin and admires his voice the moment you 3 hang out at karaoke
RIP YOUR EARS BECAUSE THEY WILL BE SINGING TEARS AND HITTING ALL THE HIGH NOTES
Scenario 2 - you are related to Minkyun and Hyojin being the new join
I totally can see your blood brother Minkyun takes advantage of his height and bullies you. Holding up your stuff high and you are jumping around him. Cues in Hyojin just pass by and kicks Minkyun at his shin without a word.
If you are the sensible one, you would bond with Hyojin quicker, again due to Minkyun's weird antics lol
Hyojin inviting Seungjoon coming over to stay overnight. Your family very much welcome Seungjoon.
Occasionally Seungjoon voice out to you about how he felt relieved that Hyojin is being comfortable with the new family.
Hyojin being a happy kid because the new household can have pets.
It will be funny if your family pet open up to Hyojin and then ignores Minkyun (inspiration drawn from Minkyun's VLive)
Example if you have a dog/puppy at home, when you three comes back, it will pounce at Hyojin, let's you ruffle its head but then when Minkyun calls its name, the dog just turns and ignore him lol
You and Minkyun would bring Hyojin to pets cafe or pet shelter.
Maybe sometimes finding Hyojin sleeping on the couch or sitting on the couch at living room because he had trouble sleeping.
Also finding Hyojin sneaking instant food from the fridge. Or waiting his instant noodle to be done at the kitchen.
Either he bribes you with food or you join him for late night supper
Its a surprise to you that Hyojin actually can be mischievous. Especially when he is with Seungjoon.
This is one headcanon I forgot to include in previous but I think it is even better to include in here. This is due to I feel that Minkyun's family are more pure in personality.
Hyojin hiding his tattoos in the beginning because he did not want your parent to think he is a bad kid or being bad influence. But later when found out, they all accept it just fine. Maybe you and Minkyun ask him the history and reason for both of his tattoos.
Bonus if you get a tattoo later on as well
Scenario 3 - you are the child born later
People are going to be jealous of you because your brothers are damn good looking
They get even jealous if you, Hyojin, Minkyun and Seungjoon go out in a group
You feel like you have 3 elder brothers lol
Both Hyojin and Minkyun very much anticipates your arrival to the family.
Minkyun might try hard to make the baby you smile. While Hyojin mostly in charge of feeding you.
Piggy back and shoulder ride by Minkyun
Alot of clapping of praising and encouragement towards baby and toddler you.
Hyojin and Minkyun both are supportive but in a different way. Minkyun is the total lets go for it time but Hyojin would be if its planned nicely and you are sure of it then ok you can do type
Hyojin as a helper of your parents video recording the growth of baby you.
You are so used to hearing both Hyojin and Minkyun singing at home
When you grown up more, maybe you have a crush with Seungjoon? Probably Minkyun will try to help you out but Hyojin might try to make you fail because you are even more precious. Also the thought of his best friend being in laws is just weird lol
A/N : sorry for the long delay. And sorry if this one is messier than usual cos my brain is not functioning lol. See you on the next hc!
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onf-headcanons · 3 years
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ONF MEMBERS AS YOUR SIBLING (J-US & WYATT version)
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Either you are related from Seungjoon or Jaeyoung side and either one of them later joined the family. Confusing? OK example you are Seungjoon ’s sibling by blood and then later Jaeyoung joined. Or in reversed, Seungjoon joined later.
1. You are the youngest sibling (could be in terms age when the family comes together or you being born later)
2. Or you are the eldest (Could stand in as Seungjoon’s sister)
Any scenario that is suitable to your own imagination. Also there will be some repeated ideas fron first universe because i would like to keep characterization consistency.
My recommendation, you are the youngest ones. Also age recommendations,
Heads up I mentioned in the Hyojin & E-tion household, 3 households in this universe are very close to each other.So, apologies in advance and by all means there is not explicit favoritism (I did wrote about household interacting for previous universes). It just convenient and i felt we can use it this way.  Also, Minseok is Yuto’s classmate.
General headcanons would be  :
This pair of sibling would be another quiet one. Just keep them away from games and horror movies lol. 
Since their birthday are very close, The family tends to have double birthday. Mostly would be you and Seungjoon in charge of cooking.
Due to Jaeyoung’s influence, Seungjoon starts working out too
Also people would have an impression of you have a sport-ish brother (Jaeyoung) and another brother who is the more academic ones (Seungjoon)
Personally, I think members from this household will visit and stop by at bookstores very often. 1 book circulating around siblings as well.
Hmm and I do think should you are the eldest, you never mingle much with your brothers’ interactions progress. You would just look and let them progress naturally.
also if you are the eldest, you might the sibling responsible to pick you younger brothers up from basketball gathering (should the family get together when your brothers are younger)
Scenario 1
If you are related with Seungjoon and Jaeyoung is the new join
No problem getting along together, and probably getting along together very fast.
Maybe if you are the introvert one, they both understands and let you approach while advance in you own pace.
Seungjoon even though would act as the middle person to help you get close to new sibling, but he wont act overboard and will be observant. Dropping hints for Jaeyoung to keep alert and also encouraging you as well.
I could totally see Seungjoon messing up some English pronunciation and Jaeyoung would promptly correct him lol
You will at first thought Jaeyoung is a matured one, (because you watched your own brother and his best friend Hyojin for a long time already). Jaeyoung will prove that you are wrong once them 3 gets warmed up.
But in comparison, Jaeyoung defo is quieter than Seungjoon
As Jaeyoung is Minkyun’s friend, he will be coming over occasionally and then it will be chaotic overload wihen them 4 plays video games.
You are so used to Seungjoon’s pranks, and if you are the eldest, you might even snapped at Seungjoon before. It did gave Jaeyoung a fright, so whenever he caught Seungjoon trying to prank you he would either warn Seungjoon, or Jaeyoung would warn you to stay alert.
(Of course pranks wont go like those bullying, its not the same)
Scenario 2
If you are related with Jaeyoung and Seungjoon is the new joined
the first thing that leaves strong impression from your new sibling during the first meeting would be his bright smile.
You are actually anxious should your new sibling is someone hard to get close with but the moment he smiles, your worry disappeared.
Should scenario 1 you are introverted, for scenario 2 it will be nice if you are an extroverted one. But maybe it will be fun if you are also mischievous 
Of course in this scenario there is no need for your help for them get closer. 
You are relived that you have Seungjoon as your brother, he helps you alot with academics.
I had a thought that Seungjoon wont be calling Hyojin to come over at the beginning of his days joining the family officially.
Seungjoon occasionally singing while he passing through
Weirdly, you would go to Seungjoon for advices when you dont want biased answers
Personally I think this scenario, 3 households gathers the fastest, could be all 3 households are in the near. (Not same neighborhood but maybe just 1 or 2 bus stops away) 
Jaeyoung will have Minkyun coming over and then Yuto might come over to pick up his drunk brother, and Hyojin will come over due to invited by Seungjoon and your household welcomes Changyoon to come along too.
Scenario 3
If you are the child that born later from your parents marriage
You tend to confuse that your brothers share the same date because the family celebrates their birthday at the same day. But once you are older, you finally understands.
So them two met when they are around 6 years old. So you would be 7 years or 8 years apart.
Jaeyoung would be doing it less, Seungjoon would always be the one who could not hold back and tease you when you are a baby and toddler. Jump scares, peek a boo and tickling. He means no harm so Jaeyoung never stops him because he know it is Seungjoon way to show affection.
Jaeyoung tho mostly would help with feeding  his youngest sibling.
It will be funny that if you are the bravest of them all. They cannot comprehend when you say you wanna go to the famous haunted house/haunted theme park. They had to follow you because they promised (maybe birthday or you accomplished your goal and they promised a gift)
THEY EVEN CANNOT COMPREHEND WHEN YOU ARE THE ONLY ONE LAUGHING
They both are very good listeners and advisers. 
Hmm I think for this scenario, the households get to know each other by playing basketball at the town park. You were brought and told to sit at the bench while watching. (At this moment maybe Yuto not yet joined Minkyun’s house) 
Sorry for being late, was planning to finish this before Jaeyoung’s birthday but was distracted by work. Gonna stop here
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onf-headcanons · 4 years
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Masterlist
edited/updated on : 28/05/2021
BF ONF series
Mornings with ONF (officially completed)
(Hyojin, Changyoon, Seungjoon, Jaeyoung, Minkyun, Yuto , Minseok )
When you can't sleep
(Hyojin, Changyoon, Seungjoon, Jaeyoung, Minkyun, Yuto , Minseok )
BF!ONF reacts
You kissing them suddenly and explained that it is a spell for them to look more good looking (Hyung line, Dongsaeng line)
First Kiss
ONF with S/O who wears glasses
ONF reacts when their S/O comes home upset
ONF X FOOD X YOU
ONF REACTS WHEN YOU TAKE/BEING INITIATIVE
ONF REACTS TO S/O FEELING INSECURE ABOUT THEIR BODY
ONF  TRYING TO GAIN THEIR S/O ATTENTION
ONF REACT TO KNOWING THEIR FEELINGS ARE MUTUAL (PRIOR CONFESSING)
ONF REACTIONS WHEN YOU COVER THEIR EYES DURING INTERACTIONS
ONF REACT TO “I KISSED MY BEST FRIEND TREND” (MUTUAL FEELINGS HE)
ONF RETURNING HOME FINDING YOU SLEEPING ON THE COUCH
ONF REACTS TO UNEXPECTED ENCOUNTER WITH YOUR EX
BF!series quick drabbles (inspired by gifsets by others or random pics)
Hyojin ( Date with Sunglasses Hyojin ,Facetime with Hyojin, Facetime with Hyojin 2)
Seungjoon (Small talk before bed)
Jaeyoung X Reader with scars (Headcanon one shot)
Minkyun X Reader with scars (Headcanon Drabble)
You telling Hyojin you dream of him during face time
Date with Changyoon but he is sulky
Chatting with Seungjoon while he is resting his head on your lap
With Hyojin during his sister’s wedding day
HYOJIN BEING GREMLIN AND PRANKSTER WHEN IT COMES TO GIFTS
LOVE LANGUAGE SERIES
HUGS
HOLDING HANDS
RANDOM GESTURE (HYUNG LINE)  , (DONGSAENG LINE)
BF!ONF MTL
PDA, ONF’stendency to leave hickies/mark on S/O, Tendency to confess first 
BF! Moodboards
Hyojin 
Model Foodie BF,  Brunch date , 
Changyoon
Engaged, Honeymoon pt1, Honeymoon pt 2, Honeymoon pt 3
Seungjoon
Coffee date, The shy BF, The fond senpai that notices you (w/hcs)
Jaeyoung
Minkyun
Coffee & Cafe date
Florist AU (idea dump)
Yuto
The Osaka BF, Living together (summer),  Day trip to Akihabara with Yuto
Minseok
University sweetheart
*****************************************************
Modern Fantasy au
1st establishment
2nd establishment
Headcanons when living with your magical friends (Pt1, pt2, pt3 )
Goodbye Minseok arc
The ending of the story
Random hc
Random hc 2
Random hc 3 (Your household sets up christmas tree and 2 of your familiars are way too excited for Christmas)
*****************************************************
MODERN FANTASY AU 2 (AKA DEMON AU)
HOW WOULD THEY LOOK LIKE 
FIRST ESTABLISHMENT
*****************************************************
Host!au (HCs and Moodboard)
Establishment Moodboard
Jaeyoung
Yuto
*****************************************************
Office au
Office au headcanon
Office au random, Seungjoon Office au random
Hyojin Office AU random
The return of Minseok (stroy arc establishment + idea dump)
*****************************************************
Sibling au ( 21 possibilities, 7 universes for Sibling!au)
Universe 1 (done)
Jaeyoung and Minkyun
Hyojin and Minseok
Changyoon and Seungjoon  (YAY christmas tree!!!)
• Yuto as Minseok’s classmate, an exchange student  
Universe 2 (done)
Hyojin and Minkyun (RANDOM SCENE WHERE YOUR SIBLINGS TRIED TO COOK DINNER)
Changyoon and Jaeyoung
Minseok and Yuto
• Seungjoon as Hyojin and Changyoon classmate
Universe 3 (done)
Hyojin and Changyoon
Seungjoon and Jaeyoung
Yuto and Minkyun
• Minseok as yuto classmate
Universe 4 (currently working on)
Seungjoon and Minkyun  (RANDOM SCENE WHERE THEY PICKING YOU UP FROM STATION)
Minseok and Changyoon
Jaeyoung and Yuto
• Hyojin as Changyoon and Seungjoon classmate
Universe 5
Hyojin and Jaeyoung
Seungjoon and Yuto
Minkyun and Minseok
• Changyoon as Hyojin,  Seungjoon classmate
Universe 6
Seungjoon and Minseok
Hyojin and Yuto
Changyoon and Minkyun
• Jaeyoung as neighbour friend
Universe 7
Changyoon and Yuto
Jaeyoung and Minseok
Hyojin and Seungjoon    (birthday special)
• Minkyun as the neighbour friend
University AU
Senpai ONF (University!AU) establishment photo 
DANCE GROUP VIBE ESTABLISHMENT PHOTO
First establishment/ world building/ character setting for each members
The shy BF, The fond senpai that notices you (w/hcs)  >> Seungjoon/J-us
University sweetheart  >> Minseok/Laun
The Osaka BF, Living together (summer)  >> Yuto /U
Coffee & Cafe date   >> Minkyun
Character vibe establishment for Senpai AU Hyojin
ANOTHER HEADCANON FOR SENPAI AU HYOJIN
PAPA!ONF HEADCANONS
HYUNG LINE 
DONGSAENG LINE
Dad!Hyojin (You and your kid at the dentist)
SONGS ONF WILL PLAY/SING TO THEIR KID
IT IS HARD WHEN YOU DAD IS AN IDOL
Random specials and others
First time (Hyojin x reader one shot smut fic) (M)
First time (Jaeyoung x reader one shot smut fic)  (M)
First time (Changyoon X reader one shot smut fic) (M)
Minseok headcanons (RTK, Sukhimvit Swimming Era)
Elseworld Omegaverse (Jaeyoung X reader fic idea proposal attempt)
ONF 3rd Anniversary special - Driving out with ONF
Random Hyojin Moodboard 1
Mini sibling au!Hyojin fic (RTK era, Reader as Hyojin’s real life sibling stand in)
Lucifer/Demon Hyojin (?)
Tutor AU (brief headcanons for all members)
2020 YEAR END SPECIAL (Rei’s writing notes for each member, maybe will update more)
2020 CHRISTMAS SPECIAL aka IDEA DUMP
2021 NEW YEAR SPECIAL LAUN x MINI GAME HEAVEN SEASON 2 HCS
SPECIAL HEADCANON TO CELEBRATE FIRST WIN
SHOULD ONF HAVING DIFFERENT OCCUPATION
ANGEL AU?
ANOTHER OFFICE AU AKA CEO AU
IDEA DUMP COMPILATIONS+ SHORT DRABBLES 
ONF AS MAFIA!/RICH KID CHAEYEON BODYGUARD/FIGHTER SUBORDINATE
CHANGYOON PAINTING YOUR NAILS
DON’T EVER INVITE ONF TO A WEDDING?
ONF MV LORE 1 , 2(KARMIC LOOP THEORY)
SOFT HOURS WITH SEUNGJUN
SLEEPING ON JAEYOUNG’S SHOULDER/IN HIS ARMS WHILE TRAVELLING
CUPPING HYOJIN’S SQUISHY CHEEKS
SPECIAL FEATURING DEMIGOD AU FROM @jae-beomblebee
1ST IDEA, 2ND (MORE ESTABLISHMENTS)
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onf-headcanons · 3 years
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ONF UNIVERSITY AU
A/n : ok this is just the first (?) elaboration of the au. This is also meshed with senpai au. I actually already had a few moodboards (Yuto and Minseok ones) and a senpai AU of Seungjoon that opened up the idea, its just i did not have the time and luxury to expand the au. Another reason was that timing i am still learning about ONF so I don't want to go too OOC on things I am not familiar with.
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To keep it short, the boys actually formed a dance club and they named themselves ONF
I do said dance club but if you wanna utilise it like F4 from meteor garden, it totally flexible
Also totally doable if you wanna use the university au as the main worldbuilding for other AU, examples, Sibling AU, or any BF headcanons I have mentioned like the MTL for PDA. MTL to confess and MTL to leave hickies, so do check out masterlist (that is constantly updating )
Also, even though it might retcon some setting I have already done, but it is totally doable for University AU to be the prequel for Office AU.
OH HEADS UP, FOR THIS AU I AM ALTERING THEIR AGE. Their real life age difference are about 4-5 years which is unrealistic to fit for the au, so shrink age difference to 1-2 years. 
One of the project they did as a dance club, which they uploaded
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youtube
Let see the members headcanons below
Hyojin : Probably musical student but if we were to jump out from stereotype,I do feel him studying marketing (analysts side)
OK if this boy does not finish his assignments in the cafeteria, then he is not Kim Hyojin lol. Constantly munching something while he trying to finish assignment or solve a problematic question
Even if Seungjoon drags him to library to do assignments . HYOJIN DEFO GONNA MAKE EXCUSE TO BUY BEVERAGE FOR THE 2 OF THEM AND SNEAKS OUT FOR A SHORT WHILE.
The type that try his best on getting good results on every class. But he never brags about it.
Should we give him a senpai au plot, I would write him as the senpai you have a crush on since high school and you did not know he attend the same university as you.
Changyoon : Design student for sure😉 Interior design, graphic design or even fashion design. Oh! Film Director also not bad? (I mean he has loads of ideas and thoughts also let's not forget about Incomplete MV)
Ppl which are not in their circles would be like, "how did you even get along with the others?" Because his majors are very different compared to the other 6
Hmm I do feel it is more like Changyoon did not make the first move to join the group. Probably the Capricorns/ENFPS (Seungjoon or Jaeyoung)
So maybe he kinda drop by to a short marketing class so that he can gain insight on how advertisements film can grasp audience heart. There he either met Hyojin or Seungjoon (maybe both) ,then only the bond gets deeper
After knowing each other he finally comfortable to be himself and does not feel awkward anymore...
Also including this hc here because I only thought of it when writing. HYOJIN,CHANGYOON, SEUNGJOON AND MINKYUN teaming up to sing something? Like them 4 have a YouTube channel that upload their covers, without showing their faces, using illustrations drawn by Changyoon
Seungjoon : Could go for science genre or maybe business administration? Also anything related with mathematics(that need flexible solving) might suit him too
Might occasionally appear in the library. Not really searching for books to read,more on giving himself the environment to complete assignments. But visits bookstore too
Maybe, the most social-able being in the group. Constantly waving or say hi to acquaintance/classmates passing by. Even though that, there are never rumours or scandals of Seungjoon being playboy. (But totally the first one in the group to get a GF, hint established in his senpai au)
Like people only notices the group because of him because of his social skills. Its kind of like the fairy who brings/enlarge the fandom lol
You can read his Senpai au here
Might doing part time job at a cafe nearby university because of distance+ time convenience purposes. The other members of the group might occasionally hang out at the place, waiting for him to finish his shift or Yuto to finish his lessons and then they go eat dinner
Jaeyoung : High chance of choosing communication related genre or/also social science/sociology related genre. I won't be surprised if he will choose psychology or behavioural science
Easily to find him in library searching for books to read/expand his pov. Sitting beside windows
One of the hyungs that will explains Korean to Yuto. Especially idioms.
First impression would be the quiet good looking one that definitely gonna stay back to ask lecturer more questions
The second on in the group to get a GF. But very very low key.
Linking to the tutor AU I posted recently, he might be teaching online to gain extra income because he does not want to do part time job to exhaust himself as he want to reserve energy to dance. Which also the main factor he suggested Yuto to do online teaching later
Minkyun : Musical student but focusing on composing. To jump from stereotypes, he could be going to broadcast communications, to become professional radio DJ
He might also join another club which is established by uni it self to make radio broadcast that plays at the cafeteria.
Cues in other members all recognise his voice immediately. Lol if he qccidentally messed up on some wordings, the next time they meet they are gonna tease him for sure haha
OK this applies to all of them but I only remembered to include this during writing for Minkyun, the boys are totally banned from playing any games at the cafeteria lol (not a strict ban but they are loud lol.) So they changed plans to play game and hangout at home, with Yuto coming over to sleep over.
Yuto : the exchange student / the foreign student who is majoring in Korean language. High chance going for Korean language teaching later.
Once they knew Yuto's Korean Proficiency level are above average, the boys are supportive and proud of him af. Lol also his devilish hyungs teasing him that he should get a girlfriend, it is a way to master language lol
Cues in his hyungs helping him out by giving him small tests of Korean grammar
Could be the only one who lives in university dorms. But he gets to have sleepovers with his hyungs at their house during weekends (rent or family residence,up to you)
Even encourages him to try out online teaching beginners first to gain experiences
Probably feeling sadden the most when found out Minseok had to quit university. Also could not help feeling lonely when his hyungs graduated. (Some did extend studies but some did not. My hunch, Minkyun and Chang Yoon could be the first two to graduated first. Jaeyoung and Yuto being the last two to graduate)
Minseok : a junior who studies history and choosing Japanese + Chinese as sub majors. Who knows, he might choose translating/interpreting as major later (I mean have you seen some interviews where he used Japanese and Chinese, damn his pronunciation is good, trust me cos i speak both language)
Did not get to stay long, maybe just 1 year and a half then he had to quit university because his whole family are moving out from the country (no worries they contact each other online frequently). His hyungs defo doing a farewell party for him.
Even though short time, but he gained the title of university sweetheart by the first day he starts uni. 
Same as Seungjoon and Jaeyoung, the type to find him in library alot.
Of course gonna ask Yuto a lot of Japanese grammar questions
BTW if link to Sibling AU, should we link it to the double Kim household, Minseok did not drop out. He could have participated an exchange program and had to leave for overseas to complete a course at a better institute
A/N : Ok I am gonna stop here before it gets even messier (slaps forehead I changdolled while writing this)
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onf-headcanons · 3 years
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ONF in Tutor !AU
A/N : HAPPY 2021 EVERYONE!! 
Hyojin
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Could be a vocal coach or piano lesson for beginners
(welp as for progress either its going to be a romantic one or not is up to you then. But I do feel/see the piano one can fit into the sibling au as well)
Changyoon
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Might not really an official tutor, but...guiding you while teaching you how to cook some certain cuisine
(Either is you learning from your BF or you are learning from you sibling)
Seungjoon
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He is a more versatile type as he is very good in academics. So I can see you will go to him for improvements in mathematics 
(Could be a scenario for the fond senpai AU or just plainly for sibling au or a total new au where you met Seungjoon because your parents contacted him to be home tutor)
Jaeyoung
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Could a random teacher teaching basic Korean language at Amazing Talker (Eng-Kor/Kor-Eng)
Minkyun
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Could be teaching you guitar
(Either romantic or just a sibling interaction thing)
Yuto 
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Either he is helping you with Japanese 101 as it is a class you took, or he is teaching you dance moves because you two frequently do dance covers.
(Defo gonna put this in the sibling thing, I did mentioned in Yuto& Minseok household headcanon. But it is also fin to put it into a university AU as well.)
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onf-headcanons · 4 years
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ONF AS BF AND YOU ARE THE S/O WITH GLASSES
This will be a short one
This is also the sibling headcanon derived from the SVT VERSION HERE I WROTE BEFORE
• The Bf that wears glasses normally at home as well - Changyoon, Minseok, Seungjoon
The Bf that has fake glasses on as accessories - Hyojin (he has that no lens round glasses for really some time), Changyoon, Jaeyoung
• The Bf that prefers you to wear glasses aka your normal self rather than contact lens - Changyoon, Jaeyoung, Yuto
• The Bf that will be dumbstruck of your look when you take of your glasses - Seungjoon, Minkyun, Minseok
• They that will think its cute when your glasses got clouded during eating
• The Bf that will laughs at you when you are eating and steam clouds your glasses - Hyojin, Seungjoon and Minkyun
• They laughs at you but still helps you to wipe your glasses. But I do feel Jaeyoung and Hyojin will nag you a bit, mentioning you should slow down let the food cool first.
• The one who has fashion fake glasses and watch you struggling but eventually helps - Hyojin, Changyoon,  Seungjoon, Minseok
• The Bf that laughs at you but he himself also has clouded glasses - Changyoon, probably Minseok too
• The Bf that will just smiles and low voice murmurs “Pabo” - Changyoon, Jaeyoung, Hyojin
• The Bf who will take the opportunity to tease you “if you can’t see with clouded glass why not let me feed you?” - Changyoon and Minkyun
• Bonus if you are short
• The Bf that will take away your glasses and make you jump around him - all of them except Yuto and Minseok. Unless you tease Yuto way too hard and he decided its revenge time.
Probably also would happen when they first time see you without glasses and you are really not confident about it and urging them to return it back, they will continue the prank while praising you saying: " Why? You really look good without them! Try contact lens once in your lifetime!"
• The Bf that dies from laughter because you are squinting so hard while jumping around and your facial expression is hilarious - Hyojin and Jaeyoung
• The Bf that will go one step further and stands at sofa - Hyojin, Changyoon, Seungjoon and Minkyun. Minkyun will definitely rush to the sofa immediately the moment he starts his prank lol also, rip your ears.
• Probably
• The Bf that will let you jumps a few times then obediently give you back the glasses - Changyoon and Jaeyoung
• The Bf that will later pulls you near and sneak a kiss when you are jumping - Hyojin and Seungjoon
• The Bf that will get a heart attack if you sneak attack him with a kiss - Changyoon,  Jaeyoung and Minkyun
• Bonus if you knew they wanna tease you by making you jumping to get back glasses, and you wanna tease them back, so you just stand there and no response
• Or you just walk away without them on
• They will sure panic af and give in hahah
• Cues in some of them might snap fingers in front of your eyes lol
• The Bf that will helps you to select a nice looking frame - Changyoon, Yuto, Minseok
• The Bf that will wear sunglasses while you are wearing glasses - Hyojin, Changyoon and Seungjoon
• The Bf that will wanna get a couple glasses - all of them
• Like i said i will keep this short so let’s end this here.
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onf-headcanons · 3 years
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ONF MEMBERS AS YOUR SIBLING (HYOJIN & E-TION version)
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We will be heading to universe 3!!!!! (Still have a long way to complete this series as there are 21 pairing)
Either you are related from Hyojin or Changyoon side and either one of them later joined the family. Confusing? OK example you are Hyojin’s sibling by blood and then later Changyoon joined. Or in reversed, Hyojin was the one who joined later.
Or You are the youngest sibling (could be in terms age when the family comes together or you being born later)
Or, You are the eldest, as stand in for Hyojin’s elder sister, or Changyoon’s elder brother.
Any scenario that is suitable to your own imagination. Also there will be some repeated ideas from first universe because i would like to keep characterization consistency.
Btw this pair of sibling would be quiet but noisy unless they are triggered. But if you are their sibling, you might have already kinda used to the noise.
*For Hyo-tion, I will not be doing recommendation *winks
BUT!!! IT WILL BE FUN TO HAVE THIS DUO TO BE CLASSMATE TURNED SIBLINGS. To elaborate, Changyoon was transferred from Jeonju to Seoul some years ago, and then enrolled to the same high school/college class with Hyojin.
*ONE BONUS IDEA WHICH I AM NOT GOING TO ELABORATE, WOULD BE HYOJIN’S ELDER SIBLING AND CHANGYOON’S ELDER SIBLING GETTING MARRIED AND THEY BECOME IN-LAWS LOL 
Also, this family is close with the other 2 families that sharing the same universe. You can check masterlist to see which other families are in universe 3 here 
Ok lets go to some common headcanons (Also apply with you being the eldest)
They might need a bit of time, because suddenly they had to live in a household. Both are looking headstrong on the outside but also sensitive in nature.
(As food is important based on them both in recent interviews and Changyoon’s “we need to eat so that we could live.” ) THEIR USUAL GREETING TOWARDS EACH OTHER IS : “HAVE YOU EATEN?”
Frequently, non nonchalantly asking each other if wanna eat out
If you are related to Hyojin, should Changyoon finds a nice Jeonju cuisine restaurant, he would bring Hyojin and you over to try it out.
To elaborate it further, Changyoon will bring you and Hyojin around when the new family first visited Jeonju. It could be Hyojin suggested Changyoon to do that so that he can know more about his new brother. 
They act like being distant acquainted friends with siblings status recognised by the law, but actually both are very observant and caring towards each other.
You might worry if your brothers cannot get along well because they seems to be interacting less. But actually your worry is just overthinking.
Changyoon might be a bit intimidated by Hyojin because of his temper when Seungjoon teasing the latter. 
And Hyojin might felt Changyoon is a very distant person who prefers to be alone. But we all know Changyoon is just a bit timid when it comes to getting know/ approaching one step further with new people. So both are not a lone wolf type. With Hyojin being observant, he will absolutely stand back and let the other party to come when their more comfortable.
With INFP Changyoon and ISFJ Hyojin, It is not like they are not good at expressing sibling affection towards each other, they just don’t attach to the overly clingly brothers mode because they are more practical in my opinion. They tend to show each other they care by supporting each other, talking about deeper topics and remembering small details. 
Teasing and joking will be there (boys will be boys) but it is kept to the minimum.
(BTW depending on some sources Hyojin is ISFJ and ESFJ both are from some random variety show snippets, as from IDOL WORKSHOP where members mentioned Hyojin like to stay indoors, I will irresponsibly conclude him as ISFJ for now)
So it is possible that they will be awkwardly adjusting due to being too cautious until one party gives in and mentions they need to be more frank towards each other.
Then the chemistry start to change. Even though same age, Hyojin would act as if he is older than Changyoon.
Both knew about each other’s singing ability and will occasionally hang out at Karaoke. Bonus actually if they both have Youtube account that upload covers,you might suggest them to upload a cover video to Youtube. Also occasionally you are the one who suggested song titles for them to cover.
Then their subscribers might wonder how did they get close and as more collaborations happen, they just tell the truth.
If you are Changyoon’s sibling, you will help out by finishing his sentences when he is buffering. Hyojin knew about it as they are in the same class, he will give Changyoon some time to reorganize.
But then if they do fight, Hyojin surely will be the one blasting words, being on point as possible. (this scenario is rare unless it is something that triggered he to the point he could not hold in)
Even though they look “not close”, they will still laugh at each other’s jokes and weird antics. 
When they both are older, one of them had a notion to get a tattoo and started researching it and another gained interest after peaking. Then they both went to get tattoo together, Hyojin even get 2 because he could not decide. (Maybe later end up being scolded by parents lol)
Scenario  (You being the youngest or being the one to be born later)
Your elder brothers play with you by giving out a lot of weird aegyos. And then they will laugh at themselves for being OOC
BTW you three when playing hide and seek or tag in the house will defo turn the house up side down. 
From your childhood memory, Changyoon seems to be the brother who is smitten with you, typically likes to squish your chubby cheeks when you are still younger. Hyojin would be the sometimes prankster that would jumpscare you.
When you are toddler, Changyoon carries you in his arms most while Hyojin piggybacks you the most.
But both of their love are endless for the younger sibling. you might find it funny when you introduced your boyfriend/Partner to your brothers and Hyojin is the one who is being unsettled.
If you are from Hyojin’s side, similar with your brother, you might find Changyoon a bit intimidating. 
If you are from Changyoon’s side and you have opposite personality, you will be the one to approach Hyojin first.
BLESS your ears when they sing in the house.
RIP your ears when you play video games or monopoly with them both.
YOU FORCING THEM TO GO INTO HAUNTED HOUSES DURING THEME PARK VISIT BECAUSE YOU WON ROCK PAPER SCISSORS, and you are trying hard to catch your breathe as you laugh at your big brothers. Also RIP your ears.
OH AND RIP YOUR SOUL if you happen to messed up. Them both will nag you for sure. Changyoon is a more softer type big brother while Hyojin definitely is a more stern type. Changyoon forgives/lets go easily after he criticized and understood that you will learn from the mistake. But Hyojin will need you to understand what you have done wrong and exactly what led towards the mistake before letting you go free from his nagging.
So unlike previous sibling hcs, you will not go to only 1 brother when you ask for opinion/guides in life choices. You will come to them both same time. Even if 1 of them are not present, you will wait until them both are free and all ears.
They are supportive, but also worry if you are perfectly prepared of your choices.
Hearing them discussing in front of you before turn their opinion towards you actually can give you great insight too.  Hyojin will elaborate the consequences and makes sure that you understand and you have the mental preparation to bear it. Changyoon will be the worrywart and asking you some blindspot matter that you did not think of.
If your personality happens to be funny and a bit of crackhead underneath a serious facade, Changyoon will team up with you if you start something funny or you  joining Changyoon. Hyojin would be at one side clapping and laughing his heart out.
Changyoon : Woah, my younger sibling indeed, you sure have sense of humour
lol
If your personality is somewhat closer to Hyojin’s, you and Hyojin both will be supportive when Changyoon participating in singing competition.
Fun fact, should Changyoon participates, Hyojin will not participate. Same goes with the other way round.
Ok I am gonna stop here, I tried to add new hcs that I did not get to cross my mind during previous universes. You can read about them by searching Sibling!onf tag, or just refer to masterlist should you want to read more of Sibling Hyojin or Sibling Changyoon (but paired with other members)
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onf-headcanons · 3 years
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I think my brain exploded or gone haywire
Why the hell I think I should write a smut(?) one shot of reader x J-US and Kino
And the first flash of story idea is crazy too. Seungjoon as your observant boyfriend who kinda guessed your younger brother has feeling towards you and HyungGu as your non blood related brother who is in love you ever since you two met.
(Did my brain wrecked because I was squeezing too much juice from it to write ONF sibling au?
Also my weird Just on brain that is craving for their interaction Lol)
Why the hell would I even think of writing smut when it is really not my forte
Stress from work life has made me weird
🤦🏻‍♀️🤣
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onf-headcanons · 4 years
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ONF Modern Fantasy!AU
or known as Familiar spirits AU
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Initially called as Hybrid AU but I felt new name fits story better. I really wanna get this idea out of my system. So... this will be long. thankfully i am working in front of PC 
TLDR : You summoned 6 (previously 7) high class grade humanoid supernatural beings and you are living with them since young
As you know I always keep my HCS as flexible as possible so other than my reccomended setting, this is AU is also doable if you wanna imagine about the illegitamate/forgotten child of Satan/Lucifer with their familiars living in 21st century
Recommended background setting : 
You are an orphan from a family with historical lineage. 
Your family/last name history is very old and your family is not the main lineage but still benefit from it.  
Your parents did exposed some of the characteristic of your family, hinting about witchcrafts, paganism and summonings. You are too young to understand about it but you are still fascinated at the designs of hexes or summoning rings.
There is a secret library in your family manor that keeps dark magic books
You are alone since the age of 12 because your family passed away due to accident. Whether there is conspiracy behind it or not I shall leave it up to you. (Cos I wont be writing this into a actual story for now. Currently is just sharing idea of AU)
Story:
You felt really lonely being alone in the big household after you finally gotten yourself out of the depressing grief stage. Initially you tried to distract yourself with all the books in the study room. 
By that time you are more mature and could grasp that your family has been engaging with really unusual stuffs than other norms in the society.
Sudden realization that why your family never visited church or any other religious spots. 
Your family butler occasionally help you out figuring with your family history since their family also been serving your family for ages.
You came across with a book about summoning familiar spirits
Welp since the whole house is just you and your butler, you started studying the book and planned to try summoning.
You tried for the first time, and you succeeded (thanks to your lineage it went smooth). The first to come to your side is Jaeyoung.
But the first trial of summoning got your exhausted and passed out for 3 days. Your butler is not happy about you doing it secretly and was trying to make you send Jaeyoung back. 
As familiars exists around their summoners by slowly draining energy from their summoners. Moreover your bloodline is a delicacy for supernaturals.
Your butler mentioned he can let it slide if you summoned smaller level/grade familiars, but you apparently, summoned a high classic grade, humanoid like hybrid looking familiar.
You argued and your butler agreed to let Jaeyoung stay. But with conditions and restriction on energy intake from you the summoner. 
So Jaeyoung started live with you in the house. Usually taking up on the animal form and occasionally in humanoid form with animal ears on when you let him. (Because humanoid hybrid form tends to drain summoner energy even more and quicker)
He looks cold and quiet but actually a fun and warm being. Since he can’t follow you to school, he can only wait back home. And once you are home he would follow behind you listening to you talking about your day.
Cues in Jaeyoung get easily scared and you not help but laugh at him. And he gets pouty lol.
After some while you felt sorry for Jaeyoung and felt he is lonely without his kind being around him. You tried summoning again.
2 years after you summoned Jaeyoung, you got lucky and summoned Hyojin + Seungjoon at the same time. 
Jaeyoung is happy of course but also worried about your body. He also helped out Hyojin and Seungjoon to get familiar with the new environment.
Your butler again is not happy but thinking he is going to retire and his children are not in condition to take his place, he admits it is better if you have accompany.
Hyojin and Seungjoon are chaotic. You 4 enjoy having fun together.
Age check, Hyojin is the oldest even though he does not look like it.
Cues in plausible scenario that Hyojin and Seungjoon teasing you and you hid behind Jaeyoung for protection.
Cues in Hyojin smuggling the house fridge because he is hungry. Human food does not fill him up because it does not work that way. But he gains an interest in flavours found in human food so he could not stop eating.
Cues in you bring back food from outside to let Hyojin taste it. 
You two might make a deal that sounds like this :
Hyojin : “If you can get me thaty famous advertised burger from the street at downtown, I will let you ruffle my hair/head exclusively for a week”
Also you are amazed that Hyojin can sing beautifully. You might go to Hyojin when you cannot sleep. He would pats you and sings you to sleep. (the songs he sings either learnt human songs or he sings in supernatural language is up to you.)
Cues in you asking Seungjoon or Jaeyoung for a hug when you are feeling down.
Seungjoon would also be the one, second to Jaeyoung who always follow you around.
You are still fascinated with summoning and will try to create your own hex to try out. With years of practise experience and some assist from your familiars, Changyoon and Minseok comes next, then Minkyun and Yuto. 
You thought Changyoon was intimidating, but turns out he is on of the funniest being. Also he always help out your butler cooking dishes. Will be the one who giving you fashion advice when you started college.
Minseok being the cinammon bun roll out of all 7 of them. He mostly is quiet but always attentive. 
Cues in you might lightly squishes his cheeks because of how cute he is. His smiles are the source of your mental healing device. 
Minkyun even though being the loud one, your house starts to have more cats and dogs visiting because Minkyun attracts them.
Cues in Minkyun asks you butler with a stray animal in his hands, “Can we keep it?”. It happens very very frequently.
Yuto would be shy one and really took his time to open up. Very shy until you felt sorry for summoning him, later only to learn that summoning on succeed when both party consent, you dote on him more.
You will go to Yuto when you wanted a quiet company.
Cues in Yuto twisting your expectations when he is in prankster mode.
Cues in Yuto teaching you their supernatural being’s language.
Cues in you caught them all red handed back talking you in their own language and they freak out lol
While the other familiars give you older brother vibe, Yuto and Minseok give you younger brother vibe. 
Cues in you. Hyojin, Changyoon. Seungjoon, Jaeyoung and Minkyun fighting to be the favorite person/ favorite being of Yuto and Minseok
Its like 8 siblings in the household now.
Cues in them being chaotic and funny, filling the household with fun noises and you shed tears because you missed the house with laughter and being cheerful. They might freak out a bit but then 8 of you will just hug it out.
Cues in all of you sitting in living room watching TV and movies together. Maybe you snuggles with anyone of them in their animal form.
Fast forward, you are college student now and your butler already retired. You have a new butler in training tho.
Poor new butler, he is your previous butler’s child but he got so intimidated by the chaotic energy of the other 7.
But things eventually work out with all 9 of you. You even have Jenga and UNO night during weekend.
And you had to let Minseok go because he wished for it. It happened because you were very sick one time (maybe something happens to Minseok and you need to feed him more of your energy/blood) and you let all of them go for a short while. But when you summons them all back, the others told you that Minseok does not want to come back after seeing how sick you were. Also Minseok entrusted the other familiars to look after you. As summoning does not work if another party does not consent, you gave up on summoning Minseok.
But will occasionally send back1 or 2 of your familiars to help check up on Minseok and cues in you being relieved knowing he is doing good, healthy and happy. 
BTW, all of them start out looking like teen boys when you firstly summoned them, But with years of living together, they all have grown. Jaeyoung looks more built and taller since he spent the longest time with you. Minkyun was the tallest amongst them when you got them all.
Also, you could not recall when it started but, Jaeyoung bridal carrying you to bed  and tuck you in if you fell asleep during movie night.
You would admit the one who really has glow up if compared when you summoned, would be Minkyun
Your energy now is better and stable so you can sustain bringing more than 2 of them out with you.
Cues in you bringing them out on weekends to hang out. They will be hiding their animal ears of course. If you wish to save energy, or they are considerate, they would just wear cap or beanie to hide their ears.
Cues in them all being protective when some random guys /people trying to filrt with you.
Cues in them using magic outside and you freak out or you laugh with them. They wont be using high energy magic, just small magic for pranks. 
MTL on who you bring out with the most, Hyojin, Jaeyoung, Changyoon Seungjoon, Minkyun then Yuto. 
Hyojin - Food related
Jaeyoung - Book shopping
Changyoon - Clothes shopping
Seungjoon - Studying at library because home is chaotic af and you cannot focus if you keep laughing at all the shenanigans they do lol
Minnkyun - Feeding strays or visiting pet shelters
Yuto - Arcades
Cues in rumours about you dating 6 guys suddenly emerged in college lol
Cues in some people either jealous of you, or they started to stalk you because they want to get a glimspe of the handsome men you are living with.
Cues in some people approaching you and asking you to introduce them to your famliars.
Everytime you had to explain yourself that they are your relatives when you bump into your classmates. Until the point that you are really fed up with it, you start to avoid them when you saw them in the crowd.
Probably scenario below
“Another related cousin again?”
“Oh he is my cousin from my third aunt...”
“Wasn’t your third aunt’s son supposed to be the other guy who was taller, with a mole on his face?”
“Oh no that one is from my mum's side, this guy here is from my dad's, we are a big family.”
Overall living with your familiars makes everyday fun. Looking back, you don’t feel lonely anymore.
(Either you want to keep it fun platonic or upgrade it to you eventually fell in love with anyone of them is up to you, I will be stopping here)
Thanks for reading XD 
Bonus
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onf-headcanons · 4 years
Text
ONF MEMBERS AS YOUR SIBLING (Hyojin & Laun version)
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So if you had already known me I tend to keep my hcs flexible. Same goes to this ONF DUO as siblings au. It can be either you are blood related with one of them or even not. Also doable if you are older than them, your birthday are in between them, or even you are the youngest, have fun!
Now this duo is super fun because they share the same family name even though not related. Which makes there is new scenario possibility. All of you related by blood is a very lazy way to open up possibilities for fun hcs.
1. Either you three are not related by blood at all. Hyojin and Minseok sharing the same family name are just pure coincidence but from different ancestry
2. Hyojin and Minseok are related with the same biological parents but you are from the new parent that married with one of their parent
3. Hyojin and you met in young age due to marriage of both of your parent and they give birth to Minseok later
4. Either you are related from Hyojin or Minseok side and either one of them later joined the family. Confusing? OK example you are Hyojin's sibling by blood and then later Minseok joined. Or in reversed, Hyojin joined. (this is for the reader to share same family name with them both)
Any scenario that is suitable to your own imagination. Also there will be some repeating ideas because i would like to keep characterization consistency
My recommendation, your birthday is in between than both of them. And I totally recommend the 3rd sibling type one
So let dive into the hcs~!
Let's list the common hcs first
You will have the sneaky and sometimes loud? younger brother and the really docile one baby younger brother
Oh did I mention, visually pleasing little brothers?
Hyojin as younger brother is like all normal younger brother. Its a love hate relationship. It is more like it that way if you two are blood related (refer to vlive where he talks about his sister, as per his words they fought alot and she "nearly" beaten him half death lmao)
If Hyojin is the elder brother, you get a really caring sibling but also a nagger. You know he meant you good but sometimes it reminds you of your parent🤣
Hyojin plays a big part of making Minseok comfortable when the Leo firstly joins the household. Cues in Hyojin is more attentive towards Minseok because he got a younger brother (if you are to be the sister sibling), so he is trying to bond with him.
On the other hand, if Hyojin is the new joined, Minseok will be the one helping him to open up quicker. Because who can resist Minseok when he is being attentive though. Also Minseok bombing Hyojin with questions due to curiosity.
If you are not related with Hyojin by blood, you both will tend to be more cautious towards each other
If you are not related with Minseok by blood,this boy has so many questions for you because he would like to know you better
But once opened up Hyojin will be your partner in mischievous pranks and comrade in weird funny antics just to try to make Minseok laugh. It is more so if Minseok is born later on and you two elder siblings sometimes in charge of taking care of the younger boy.
Once opened up, Minseok will be the best younger brother in the world. Looks up to both of his elder siblings.
Especially if Minseok is born after the marriage, you two kind of sees him as the main button/string/link for both sides of the family
When your parents brought baby Minseok home for the first time, you two are super fascinated at the smol human being and being very very protective of baby Minseok
Taking turns feeding baby Minseok with his milk bottle. Cues in both parents could not stop taking photos because you 3 are too precious
Also not really linking the universe/au, but Hyojin brings Seungjoon home while Minseok brings Yuto (short term exchange student) home
Don't expect much of Hyojin helping you on your homework. If you do ask, he might gonna nag you lol. Minseok? His curriculum are not the same as yours to begin with🤣
When presenting gifts to Minseok during his birthday, you and Hyojin always dead by drowning into Minseok 's warm smile
You two elder siblings thinks that Minseok is cute becauee he cannot handle carbonated drinks (if i am not mistaken, he cannot handle coffee too)
Scenario 1. If you are related with any one of them
He is also a scaredy cat so you also got used to him screaming when he is startled.
It will be fun contrast that you are the calm type and do horror but Hyojin is the exact opposite lol.
Already used to Hyojin singing in the household. And you are supportive towards him singing. Even teasing him that he should go for audition (if you imagined a normal household)
Another contrast if you actually cannot sing but then later found out your dancing trait when you interacted with Minseok. Will elaborate below
Minseok as your younger brother is a very attentive type of brother. He knows all your likes and dislikes.
As Minseok's elder sibling, you know Minseok loves to dance. And might also occasionally joins Minseok when he does girl groups dance cover
Both of you lowkey screaming at dance practice videos of the girl groups that you two really like. Cues in the clueless Hyojin passing through lol. And then peeks his head to see what are you guys up to. Letting out his signature oohs and aaahs praising you two doing good job
Scneario 2. If you are not related with any one of them
If you three only meet each other during teenage, it will take a bit of time for the Taurus boy to adjust. But the Leo boy is fine.
Maybe Hyojin is cautious that he lowkey nag at Minseok to not bother you too much.
Amazed at how much they can eat. Especially Hyojin. His love for food is no joke.
Sometimes in the middle of the night, you caught a hungry Hyojin in the pantry/kitchen. Out of guilt he might offer you a bite just to bribe you to not tell the others
You seen a few times Hyojin snaps at Seungjoon because the latter keep calling Hyojin "piggy". So you keep that in mind and never call him that.
Oh if you are happened to the only child, seeing Hyojin and Minseok interaction made you felt cozy and a bit jealous. But they won't let you feel like outsider for long.
So maybe anyone of you or maybe parents suggested you 3 should hangout. And in a weird coincidence, you 3 decided to hang out at karaoke. And then you get the chance to hear Hyojin sing. You (and Minseok) are left in awe.
You might slowly lower down your mic and not sing for the rest of the karaoke session. And keep making excuses because you are not confident
If you happened to share the same song/playlist taste as Hyojin, you two will bond quick
Once you thought there is not one at home and then you started hunming a small tune of a song you really liked while you are on the way to the kitchen to grab a glass of water (one of the song in Hyojin's playlist too). Then only find Hyojin is actually sitting at the couch, texting.
Cues in cheeky Hyojin encourage you to sing
If you happened to found out Minseok listens to a girl group you like as well, you both bonds quicker. Also Minseok teaching you how to dance the chorus of the song from the group you love. Even though you are kind of sloppy at sharp moves, Minseok still won't stop praising you.
A/N : gonna stop here for now
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