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genshingorlsrevengeance · 3 months

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Persona 3/Fire Emblem Three Houses Crossover Megapost

In celebration of Persona 3 Reload coming out and reigniting my love for S.E.E.S, and wanting to write Three Houses once again, I figured I could do both at once. If you wanna see more, feel free to request interactions/scenarios, I'd be happy to! Enjoy the shenanigans of the Blue Lions and S.E.E.S!

Word Count: 3.2k Content: Blue Lions meeting the P3 Protagonists, Sylvain talking to Aigis, Dimitri talking to Minato and Minako, Byleth and Sothis meeting Elizabeth, and Blue Lions reacting to Personas

Blue Lions meeting the P3 Protagonists ===============================

Byleth walked through the crowded hallways of Garreg Mach Monastery, accompanied by the two mysterious visitors that appeared during the bandit attack.

One was a blue haired boy, both hands in his pocket as he emotionlessly glanced around, ignoring the gaze of the students.

The one beside him was a brown haired girl with a ponytail, who in contrast seemed far more enthusiastic about meeting everyone, waving hello to some of the students.

(Minako) "Come on, you can at least smile a little! We're representing Gekkoukan after all."

Minato rolled his eyes and coldly replied.

(Minato) "Junpei is already ruining our reputation for us back at the entrance. No need for me to do anything."

Minako sighed and looked at her new teacher with a wry smile.

(Minako) "Sorry, this is probably not a good introduction, is it?"

Byleth shrugged, turning to face the both of them. His expression was not too dissimilar from Minato's.

(Byleth) "Honestly, I don't really know how to approach this better than you all. I'm a mercenary."

Minako put a finger to her chin as her brows furrowed.

(Minako) "Hm...Think we should have gotten Mitsuru-senpai to take care of the talking for us?"

(Minato) "Probably."

Minako shrugged shortly after thinking about the situation, her smile quickly coming back.

(Minako) "Well, too late for regrets now!...Actually, where are we going?"

(Byleth) "We're heading towards the...Blue Lions classroom I believe. Dimitri said he wanted to thank you two personally, I have to go to meet with some other people, but I'll check back with you all later."

After departing with Byleth, the siblings entered through a large double door and saw Dimitri surrounded by seven unfamiliar faces.

Dimitri gave them a nod of acknowledgement as the group scattered to make room.

(Dimitri) "I take it your group is getting accustomed to Garreg Mach?"

Minako smiled in response, first looking at everyone's expression and taking note of them before giving an answer. Minato meanwhile kept his stoic look and let his sister do the speaking.

(Minako) "Psh, not in the slightest! We've never seen anything like this back in our world."

An orange haired girl spoke up.

(Annette) "Another world? Wow, so the rumors weren't kidding! That'd certainly explain the weird looking clothes."

A larger dark skinned man standing next to Dimitri followed up her comment with a respectful bow.

(Dedue) "Where your group comes from is irrelevant, we all owe you a debt of gratitude for saving his highness."

Minato nodded back.

(Minato) "Of course. And thanks for giving our friends a place to stay."

(Sylvain) "Jeez, that guy's a little intense. Doesn't he remind you of a certain someone?"

Sylvain elbowed Felix, who gave an annoyed glare back.

(Felix) "Shut up already. They can hear you, you know."

(Minako) "Eh, don't worry about my baby brother here! He's usually like this."

(Mercedes) "Oh, you two are siblings? I wouldn't have guessed!"

Minato replied in an emotionless tone, though it did not carry any hint of malice in it.

(Minato) "We get that a lot."

(Ingrid) "If there's anything you guys need help with, feel free to reach out! My name's Ingrid, by the way."

Everyone took a moment to introduce themselves.

(Ashe) "I really look forward to getting to you know you all!"

Minako gave him a warm smile back.

(Minako) "Me too! And though he may not look like it, this one is too!"

(Minato) "Hm."

The siblings departed the Blue Lions to find their own group, leaving them to converse amongst themselves.

(Dimitri) "They appear to be...a unique bunch."

(Annette) "Minako seems really nice! Though, I couldn't really get a read on her brother."

(Ingrid) "It probably won't take long for Sylvain to piss him off."

(Sylvain) "Hey, why are you making it sound like he will get angry at me? We could be best buds!"

(Felix) "Is that right? Well, I'm not holding my breath."

(Mercedes) "This is going to be a fun year with them around, that's for sure!"

(Ashe) "Probably super chaotic too. I wonder what the rest of their group is like."

(Dedue) "If they are anything like us, Ashe, I'm sure it won't take them long to adjust."

=============================== Sylvain talking to Aigis ===============================

Aigis appeared to be standing still near the greenhouse, quietly examining the plants.

She had been that way for nearly an hour before she was approached by Sylvain.

(Sylvain) "Hey there, Aigis! Whatcha doin' here?"

Her head stiffly turned to face Sylvain and gave a single nod, her face remaining unchanged.

(Aigis) "I am observing the plants in your world. They appear to be very similar to our own, but differ in properties and how they are utilized."

Sylvain tilted his head curiously, turning to look at the plants with a look of genuine curiousity.

(Sylvain) "Huh. I never really thought about that kind of thing before, but it must be crazy for you to see plants be made into healing potions."

(Aigis) "Negative. Plants were used by humans for medicinal purposes, ranging back thousands of years. But the potency of your flora appear to be far stronger than the ones found on Earth."

Her answer confused him, making him shake his head and remember why he was there to begin with.

(Sylvain) "...Okaaay, kinda lost me there. But, if you're wanting to see other things that are different, how about going out into town with me?"

(Aigis) "Are you asking me out on what they refer to as a 'date'?"

Sylvain chuckled at her question.

(Sylvain) "If you wanna call it that, then sure-!"

(Aigis) "The answer is no."

(Sylvain) "Wha- why not?!"

(Aigis) "Minato-san has specifically warned me to not go on any dates. Especially with you, Sylvain."

Though her tone was completely static, he could gleam a bit of malice in the response.

(Sylvain) "Okay listen, whatever he told you about me is not true!"

(Aigis) "He has not told me anything."

(Sylvain) "Then who did?"

Aigis paused for a moment before resuming.

(Aigis) "...The list is as follows: Ingrid, Felix, Dimitri, Dorothea, Yukari, Junpei, Mitsuru, Minako, Byleth-"

(Sylvain) "Alright alright, I got the message across! But surely you must be curious about going outside the Monastery for at least a few hours? I can be a tour guide at least!"

Aigis paused once again.

(Aigis) "...I comprehend. If this is not a date, then I do not have a problem with this request."

(Sylvain) "G-Great! See you in half an hour?"

(Aigis) "Affirmative. I also have an order I am obliged to follow, given by Minato and Minako in regards to you."

Sylvain wasn't even sure he wanted to know what it was.

(Sylvain) "And that is...?"

(Aigis) "I am authorized to use force if pressured onto a date."

(Sylvain) "F-Force?! Now hang on just a-"

(Aigis) "Commencing preparations. Please meet me by the entrance in half an hour."

Aigis walked away, leaving Sylvain standing by himself with an open jaw.

(Sylvain) "What the heck is with her?!"

C Support Reached!

=============================== Dimitri talking to Minato and Minako ===============================

Dimitri walked into the dormitories where the S.E.E.S members had taken up residence during their stay at Garreg Mach.

At the moment it was just Minato sitting on the couch with a strange device on his ears, and Minako reading a book from the library.

Minako looked up from her book and waved to Dimitri.

(Minako) "Hey, Dimitri! Surprised to see you here!"

Minato noticed Minako moving and grabbed the right side of his device and lifted it off. Dimitri could hear words coming out of it.

"Hey, hey, hey" Fueling the fire with the burning desire-

(Minato) "Hey."

(Dimitri) "Are those words coming out of that earmuff?"

(Minako) "Oh, that's right! I forget you guys don't know what headphones are!"

Minato raised an eyebrow at his sister.

(Minato) "We've been in a medieval world this entire time, and you forgot that it doesn't have technology like ours?"

(Minako) "Hush you! Anyways, that's a small...thingy that can play music, in short. Now whatcha need?"

Dimitri cleared his throat after focusing away from Minato's headphones.

(Dimitri) "Truthfully, I was curious to see what you all got up to in your free time. You seemed to have adjusted to the school life well, but I was wanting to make sure you could do so in your free time."

Minato shrugged nonchalantly.

(Minato) "We're managing, surprisingly."

(Minako) "Yeah, who knew that hanging out with a buncha people our age who can cast fireballs would seem so normal!"

(Dimitri) "That's another thing I wanted to ask. Your group seems well versed in combat already. What exactly is your home like?"

(Minako) "Weeeeeelll-"

Her voice trailed off, waving one hand dismissively.

(Minako) "Just self defense is all! We have to deal with vagrants in our world too."

(Dimitri) "Is...that right?"

(Minato) "You're a worse liar than Ashe-"

Minako immediately pointed at her little brother.

(Minako) "YOU! YOUR FACE, SHUT!"

That made Dimitri laugh.

(Dimitri) "I apologize, I did not mean to pry. I am just impressed more than anything."

(Minato) "Relatedly...Today's the first full moon here at Garreg Mach, right?"

Dimitri noticed how both their expressions suddenly became serious.

(Dimitri) "Y-Yes it is. It also means it's nearly been a month since you all first came here. Is the moon significant in your world?"

Minato sat up from the couch and put his hands into his pocket.

(Minato) "Very."

Minato began walking away from the group before giving Dimitri one last look.

(Minato) "You might get your answer sooner than you think."

As he exited the dorm, he turned to Minako.

(Dimitri) "Did I say something wrong?"

(Minako) "Oh, don't mind him. He's usually that much of a jackass...But he's not wrong...Say, how about we spar near midnight, Dimitri?"

=============================== Byleth and Sothis meeting Elizabeth ===============================

Byleth woke up in his bed, rubbing his eye before noticing Sothis was trying to shake him awake.

(Sothis) "Finally! Do you know how long I've been trying to- Know what? Forget it, that doesn't matter! There's something here!"

(Byleth) "Something here? What are you-"

He paused when he noticed there was a blue glow coming from outside the door to his room.

Byleth immediately grabbed his sword and nearly kicked down the door with Sothis floating behind him.

Only to see another door in front of him, glowing blue and with an energy he could not place the feeling of.

(Byleth) "That wasn't here yesterday."

(Sothis) "Your keen senses of observation never ceases to amaze me, child."

Byleth made no comment as he slowly circled around the door. There was nothing it led to, even on the other side.

Byleth saw a group of students walk past the door, giving him an odd look but saying hello, not even acknowledging the door's presence.

(Sothis) "The door feels...strangely familiar."

(Byleth) "Should we go inside it?"

The two exchanged a glance before slowly opening the door and entering it.

...

Inside sat Sothis's throne, now bathed in a ghastly blue aura, a table sitting in front of it, but most notable of all was the fact a woman was standing inside, alone.

(Sothis) "M-My throne!"

The woman turned towards her visitors and politely bowed.

She had blonde hair and a strange blue attire, adorned with a small hat that rested on her head.

While everything about her seemed to be human, the way she portrayed herself and everything surrounding her was anything but.

(???) "Welcome, to the Velvet Room."

(Sothis) "Velvet Room? This is MY room!"

(???) "...Ah, so it is! I was wondering why it was so empty. I hope you do not mind that I have taken up residence here, you have my sincerest apologies!"

Byleth reached for his sword, but suddenly realized it was gone. Deciding to question instead of fight, he simply asked:

(Byleth) "Who are you?"

The woman smiled at the question and bowed once again.

(Elizabeth) "My name is Elizabeth, it is a pleasure to be your acquaintance! I am the attendee to the two under your care."

It took a moment for them to realize who she was talking about.

(Byleth) "Minato and Minako?"

Suddenly, things made sense. Everytime Sothis appeared to talk to him, they appeared to be aware of her, despite the fact no one else in their group could.

They already weren't normal, but this further solidified that something else was at play here.

(Elizabeth) "The Arisato siblings, yes! Well, truth be told my brother is supposed to be here, but alas he is nowhere to be found. But I am more than enough to serve their purpose."

(Sothis) "What do you provide that requires taking over my home?"

(Byleth) "That's in my head, no less..."

(Elizabeth) "I provide them with the fusing of Personas for their journey. Nothing more, and nothing less! For we can only assist, never directly intervene.

Elizabeth put a finger to her chin, thinking about what to say next.

(Elizabeth) "As for the occupation, it seemed this was the only place I could manifest myself that could easily reach you as well. Your fates are all intertwined, after all!"

Sothis sighed and crossed her arms, floating over to Elizabeth.

(Sothis) "You couldn't ask?"

(Elizabeth) "I tried, multiple times. But I believe you were asleep everytime I attempted, and eventually found this empty room, save the throne."

(Byleth) "...That one is more of your fault than anything-"

(Sothis) "Be quiet."

(Elizabeth) "I look forward to getting to know you two as well."

(Byleth) "Well, I'm Byleth, and that's Sothis. I guess we'll get to know you too."

Suddenly, the door opened behind them.

(Minako) "I guess it makes sense for the Velvet room to- OHMYGOD!-"

Minako leapt back in fear while Minato only flinched.

(Minako) "WHAT THE HECK ARE YOU DOING HERE?!"

(Minato) "It's that floating green thing again too-"

(Sothis) "EXCUSE ME?!"

=============================== Blue Lions Reacting to Personas ===============================

(Dimitri) "EVERYONE, TO THE CATHEDRAL!"

The Blue Lions and Byleth dashed across the bridge leading to Garreg Mach's cathedral, bathed in the ominous light of a full moon.

The previously calm black skies had darkened to a sickly pale green glow while being chased by monsters.

While they could kill a few of them, there were too many of them to deal with. And under the moonlight they appeared to be getting stronger.

Ashe, Mercedes, and Annette attempted to hold back the monsters with spells and arrows, but if they stood their ground they would have been overwhelmed.

Instead, Dimitri, Dedue, Felix, and Byleth held the ones in pursuit off while Ingrid and Sylvain tried to find a way inside.

(Sylvain) "Damn it, it's stuck!"

(Ingrid) "Then we gotta kick the door down!-"

Before she could attempt to do so, the ground they were standing on quickly darkened, making everyone look up.

A massive blob-like monster slithered down the walls, with too many arms to count protruding out of it, all wielding swords.

(Annette) "B-BEHIND US!"

Everyone turned around and gained distance as the monster crashed onto the concrete, sending bricks flying into the air at violent speeds.

The Blue Lions had been pincered by these creatures.

(Mercedes) "I-Is this the work of the same people that attacked the burial site?!"

(Dedue) "I am unsure if even they are capable of doing this! The people I had been speaking to suddenly turned into coffins!"

(Byleth) "Here's the plan, when I count to three, we break through these monsters coming from the bridge and make a run-"

Before he could finish his sentence, they all heard someone speaking to them.

(Fuuka's Voice) "Thank goodness, you all are still okay! Can you hear me?!"

(Felix) "Is that...Fuuka?!"

(Ashe) "Is she in danger too?! How can we hear-"

(Fuuka's Voice) "Everyone needs to get back to a safe distance from the Shadows on the bridge, right now!"

Without warning, the shadows suddenly burst into a black mist from what appeared to be an ice spell.

Mitsuru, Akihiko, Ken, Shinji, Aigis, and even their dog, Koromaru, were standing from the entrance, all wielding weapons.

(Mitsuru) "Everyone, escape to us, we'll keep you safe!"

Before anyone could react, Minato, Minako, Junpei, and Yukari ran in front of them, all wielding strange devices in their hands with red armbands.

(Dimitri) "Wait, that thing is too dangerous for you to-!"

Minako turned to them with a smirk, giving them a thumbs up and cutting Dimitri off.

(Minako) "Don't worry. Bandits and cultists are your guys things, Shadows are ours!"

(Junpei) "Hell yeah, time for us to finally shine!"

(Yukari) "Please focus, you two!"

(Minato) "You wanted to see where we got our combat skills from, right Dimitri? Here's your answer."

Everyone watched with confusion as they pointed strange devices to all their heads.

(Minato/Minako, Junpei, and Yukari)

"ORPHEUS!" "HERMES!" "IO!"

The monster seemed to recoil in surprise once the four pulled the trigger, summoning monsters of their own, igniting the area around them in a bright blue flame.

They rushed the monster with their weapons raised, joined by their ghastly summons and seemed to attack with near perfect synchronization.

Looking back at the bridge, the rest of them appeared to be doing the same and wiping out the smaller monsters with ease.

(Shinji) "The hell are you doing standing still, get a damn move on!"

(Byleth) "You heard them, MOVE IT!"

The Blue Lions did as commanded, running from the fight, though most of them couldn't tear their eyes off from what they were seeing.

(Sylvain) "Holy hell, they're tearing those things apart! What even are they?!"

(Felix) "Tch, no wonder they always seemed like they were holding back, it's because they were!"

(Annette) "Are those made from magic?!"

(Mercedes) "They look more like ghosts to me!"

(Ashe) "I-I hope they're not, but I'm glad they're on our side!"

(Ingrid) "Think they can teach us how to do that too?"

(Dedue) "I do not think we should be asking questions like these right now!"

(Dimitri) "Agreed, we need to find somewhere safe!"

(Byleth) What kind of place is their world where fighting monsters like these is normal for them?!

...

(Elizabeth) "Hah, I knew they'd have no problem."

Sothis watched the ongoing fight with her jaw opened wide, not believing what was happening.

...

Once the Full Moon Shadow was dispatched of, the members of S.E.E.S moved to find the Blue Lions.

(Fuuka) "Good work everyone, the rest of the shadows are disappearing en masse."

(Mitsuru) "Operation complete, though I cannot say I feel particularly great after this victory."

(Ken) "I can't believe the Dark Hour followed us here..."

(Koromaru) "Woof!"

(Aigis) "Koromaru agrees."

(Minato) "Makes sense something would be up if we could still use our evokers here, even outside the Dark Hour."

(Yukari) "I can't help but feel responsible. We brought the Dark Hour to a place that didn't even have to deal with it..."

(Junpei) "Saving one world was already great, but maybe we'll get the credit for two?"

(Shinji) "Tch, what a pain in the ass."

(Akihiko) "Suppose we just need to keep in mind of the moon here too, on top of all the other things to worry about."

(Minako) "Feels good finally getting to let loose without worrying about witnes-...Oh crap, where did the Blue Lions go! They didn't exactly look like they'd forget about this anytime soon!"

Fuuka quickly found where they were hiding, and S.E.E.S moved to find and explain everything they could.

Or at least, attempt to explain.

Mitsuru and Minato had to do most of the explaining.

#crossover #fe3h crossover #persona 3 crossover #persona 3 au #minato arisato #minako arisato #byleth eisner #dimitri alexandre blaiddyd #blue lions #s.e.e.s

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