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theprettywriter · 8 months

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The devil's darling : Osamu Dazai

Synposis : with your first visit to the port mafia's headquarters, you see the other side of your lover. The one that he never showed you before. It was as if you suddenly remembered that he wasn't just your sweet boyfriend . He was also the most feared man in Yokohama. He was also the youngest boss of the criminal organisation, the port mafia.

Genre/ warnings: port mafia boss dazai, fluff, angst, mentions of blood, knife, mentions of getting stabbed, slightly suggestive

A/n: this story doesn't follow the original beast au storyline. In fact I won't even call it beast au because everything else is same other than dazai being the boss.

Author's pov

You hummed a soft tune as you walked around the huge office, lightly touching the art piece that hung on the wall in fear of damaging it somehow. Now you know you just shouldn't touch the delicate art work but you couldn't help yourself. If you find something fascinating then you just need to feel it once. And you also know that your boyfriend wouldn't blink an eye even if the art piece got damaged. He's more than capable of buying a few hundreds of the same piece if he wants but you'd rather live without the guilt of ruining it.

Deciding that you should probably stop touching it, you took a step back, opting to admire it from a distance. "sweetheart" you perked up at the sound of his voice and turned around, your lips curling up in a soft smile as your eyes met. "hmm?" you hummed silently asking him to continue.

Dazai placed the papers he was going through down on his desk, looking at you with soft eyes "are you feeling bored, my love?" he mumbled and you quickly shook your head. Well you admit that you were starting to feel a tiny bit bored with him silently working on some papers but you didn't want to disturb him so you opted to look around his office to pass some time. You know he's a busy man so you cherished every moment with him that you can spend in comfortable silence.

He looked at you silently for a moment before pushing his chair back slightly and extending a hand towards you "come here angel" your smile widened and you skipped towards him, placing your hand on his. A small smile tugged on his lips as he pulled you on his lap, kissing your wrist when you cupped his face with soft hands.

He hummed raspily when you leaned forward to press a quick kiss on his lips, his one arm wrapping around your waist while the other tucked your hair behind your ear "hey samu" you whispered against his lips before pulling back, giggling when his lips chased yours "hey angel" he mumbled pulling you in another kiss "you know I can tell when you're getting bored, sweetheart. You keep looking at the clock every now and then."

You scrunched your nose smiling sheepishly. Of course he'd catch on "okay I am feeling a little bored but it's fine. Your office is so big I'm sure I'll find something interesting in here" you said tucking a side of his hair behind his hair. You love it when he tucks his hair behind his ear. He hums as his hand slips inside your shirt, lightly caressing your bare waist "do you want to go back home? I can call a car for you -" before he could finish his sentence, you cut him off quickly shaking your head "no no I'm fine. I want to stay here with you. I can wait until you finish your work and we can go home together " you paused before adding "b-but I can go back if I'm disturbing you"

He tched pulling you closer "nonsense. You're never disturbing me, angel. I'm happy that you're here. I was asking in case you wanted to go back" you smiled at that, kissing his nose "then we'll go back together" he smiled softly with his hand going to the back of your neck. Pulling you towards him, his lips brushed against your forehead before he pressed his lips on yours in a deep kiss. Your eyes fluttered shut as you wrapped your arms around his neck, kissing him back softly.

At the same time, someone knocked on the door and you pulled back startled, going to get up but dazai didn't let you. You looked at him surprised when his grip around your waist tightened and he held you firmly on his lap while someone entered the room "boss" Nakahara Chuuya's voice sounded in the room and you turned your head to see chuuya standing there with his head bowed and his one hand holding his hat against his chest "they've been taken care of as you asked" who was taken care of? You'll never know and you don't even want to know.

You were just here to spend some time with your lover "good. Now chuuya, you've come right in time" chuuya looked up, silently asking dazai to give him his next orders "see, this is the first time my sweet girl has visited the headquarters and she's started to feel bored so would you mind giving her a tour around the building while I finish my work?" you looked at dazai surprised while chuuya nodded "of course not. I'd be happy to" "samu" you whispered tugging his coat slightly to make him look at you "I'm fine staying here" dazai smiled, running his thumb across your bottom lip "I know your curious little brain is dying to look around the building, sweetheart. So go with chuuya and I promise I'll be done by the time you come back. Then we'll go home"

You hummed thinking for a moment before nodding and looking at him with a smile. He raised an eyebrow when he recognized the mischievous glint in your doe eyes . You bite his thumb lightly, giggling softly when you saw his eyes darken a shade before getting off of his lap and pressing a kiss on his forehead "then I'll see you later Samu" he hummed, squeezing your hip and watched as you turned around and started walking towards the door.

You said a small thank you to chuuya as he held the door open for you and turned around one last time to wave at dazai, smiling as he waved back. You fiddled with your fingers awkwardly as you both passed by the multiple guards whose jobs were to guard the boss's office. Each one bowed towards you and you almost told them to stop bowing so much. You weren't used to it, unlike dazai who wouldn't even glance at them.

The long walk towards the elevator was silent with chuuya walking besides you in a respectful distance. You'd seen him many times before. You're aware that he's dazai's right hand man so you've seen him besides dazai multiple times but you've never talked to him properly so you were a little scared that the whole time will be spent in awkward silence.

So when you both reached the elevator and he pressed the button, you finally decided to break the silence "I hope I'm not disturbing you while you're busy, nakahara san" Chuuya's gaze snapped at you and his smile made you feel a little at ease "of course not, y/n San. I could actually use a little walk right now too. And please just call me chuuya" you nodded smiling softly as you both stepped in the elevator, now feeling more relaxed.

"is there anything you'd like to see first?" chuuya asked before pressing any button. You shook your head and he nodded "then we'll start floor by floor" the moment You both stepped out of the elevator, you were suddenly aware of the many eyes on you and it made you feel very, very uncomfortable. It was like every person in the floor was staring at you and judging you.

Your gaze fell on the floor and you whispered to chuuya "is it just me or is everyone staring?" chuuya kept his eyes ahead, chuckling softly. He didn't need to look around the room to see what everyone was looking at. "don't worry. This is the first time the mafia is seeing their boss's partner. That's why they're all staring. They don't mean any harm" even though he said that, he still looked around the room once with his eyes cold and stern. And once was enough to make all the men look away.

You didn't notice when people stopped staring at you because you were already busy looking around the huge place. There were so many long hallways and even more doors that you were sure you'd get lost in here if you wander around alone. Every person around you stepped back as you walked past them. But thankfully you were distracted enough to pay them no mind.

"this is the security room" chuuya said stopping in front of a black door before opening it. You hummed leaning forward on your tiptoes to look at the dark room. The only light in there being the many monitors that showed each and every part of this building. "you can go inside" chuuya smiled as your eyes widened "I can?" he nodded "of course you can" he held the door open for you but before you could take a single step in, the men sitting inside were already standing up and bowing a full 90°. Ah they must have probably seen you with dazai through the cameras when you had entered the building. Your eyes widened even more and you hastily said "p-please continue your work!" before looking at chuuya who nodded chuckling softly and closed the door.

"let's not go inside any room from now" you look at him sheepishly and he nodded "as you wish" you had a feeling he was trying to be polite by now laughing at you.

The next half hour went by a blur. Walking around the building, with him showing you the various rooms. You actually managed to see the inside of their training room because it had glass doors instead of the black wooden ones. From the outside you could see various types of guns hanging on a wall and many men training. And After only seeing men on every floor, you were surprised and very happy to see a girl outside the training room. She was wearing a mask so you couldn't see her face but before you could stop yourself, you waved at her with an excited smile. Your smile softened when you saw her eyes widen for a moment before she shyly waved at you and bowed before entering the room.

"that was Gin" chuuya said as you both walked towards the elevator "gin?" you looked at him and he nodded "Gin akutagawa. She is Ryunosuke's sister" your eyes widen in recognition "I didn't know he has a sister. They seem completely opposite of each other " you smiled at the image of the two siblings "they are" chuuya replied shortly.

After walking around the building for another 10 minutes, you were starting to feel tired. You've been walking around since 40 minutes but there are still places left to see. It seems like chuuya noticed your pace getting slower and stopped before turning around and looking at you "are you feeling tired, y/n San?" you smiled slightly and nodded "a little" ''would you like some water?" chuuya asked pressing the button on his ear piece and you nodded again "yes some water would be great. Thank you" he gestured for you to follow him "this is the resting area. You can rest here for a while and then I can take you back to the boss's office" he told you before saying something in his ear piece.

You wanted to tell him that you were fine and that you can continue the tour but before you could say anything, you both heard a commotion from nearby. Chuuya's gaze snapped towards the voices and he looked at you for a second "please wait here for me y/n San. I'll be back in a second" you know that you're safe here. This building literally belongs to your boyfriend and all these men work for him. But still the idea of being left alone in between all these new faces made you a little uncomfortable so you shook your head and stood up "I'll come with you" he nodded and got in front of you. All this time he was walking besides you so you were confused as to why he suddenly got in front of you "I'd like You to stay behind me" all the warmth in his voice had disappeared and you recognized the coldness in his voice. You've heard it before when he's doing his job as dazai's bodyguard and second in command.

You followed him as he walked towards the direction where the voices were growing louder and louder, until you both reached what looked like a room made for holding different types of weapons. You peeked around chuuya to see a small group of men standing at the center of the room but your eyes widened when you saw him "dazai?" you whispered, a smile blooming on your face but it soon dropped when chuuya growled "what the fuck are you doing?" you realised that the words weren't directed to dazai but the man standing in front of him.

"y/n San don't come any closer" chuuya said without looking at you and rushed by dazai's side. Your nervousnsess seemed to grow when you sensed the tense atmosphere in the room. Dazai looked calm at once glance but if you looked closely you could see the coldness in his eyes as he raised a single hand "chuuya. Stand back" Chuuya's jaw clenched but he didn't argue and stood a step behind dazai.

"now" a shiver ran down your spin when his lips tugged up in a smile. Not the smile that he gives you. But a cold and humorless one. "why don't you continue?" his voice was calm when he spoke to the man in front of him and only then did you look at the unknown man. While dazai looked as calm as ever, the man in front of him seemed to be shaking with fear. You looked at dazai nervously when he took a step ahead, causing the man to step back "you were saying something weren't you? Cat caught your tongue?" his lips pulled up in a smirk and there was almost a pleasant glint in his eyes when the man opened his mouth to say something "you're crazy" he sneered causing an empty laugh to slip past dazai's lips "oh really? I wouldn't have known until you told me"

Suddenly your eyes caught the movement of the man's hand and your eyes widened when you noticed the shine of a knife in his belt. For some reason the only thing going in your mind was that you had to take dazai out of here. So your legs started moving before you could even comprehend it and you were already running towards him. The man stumbled back when you got in between him and dazai and you breathed shakily reaching up to cup his face "samu" you whispered, your thumb rubbing his cheek softly. You didn't know what you were feeling when his gaze fell on you. That cold and empty gaze looked at you for a moment before a smile pulled up on his lips. But that wasn't the same smile he gave you almost an hour ago. That smile was full of love and warmth but this one lacked both of those emotions.

Chuuya had pulled his gun out the moment you stepped in but you were too busy trying to find your dazai to notice that. Your eyes searched his and you felt his hand gracing your waist in a light, feathery touch. And then as you continued looking in his eyes, trying to find the same warmth, you realised with a sinking feeling that you weren't looking at your lover right now. You were looking at the most feared man in the city.

"sweetheart" he mumbled, his fingers digging in your skin slightly with his voice void of an emotion. He always calls you that so why did it feel so different right now? "go back to my office. I'll be there soon" he wasn't asking you. He was telling you to go back. But that didn't stop you from shaking your head. You needed to get him out of here. "come with me" you whispered with pleading eyes, gripping his coat and hoping that your dazai would come back.

Before he could say anything, you heard chuuya yell "oi!" and all of a sudden, your were in dazai's arms. His arm was wrapped around your waist tightly and you were pulled in his chest. Your heart was pounding when you looked up, noticing that every man standing in this room were pointing their gun at the man who was arguing with dazai. "d-dazai?" you called him turning your head back and a fearful gasp left your lips when you saw dazai gripping the sharp end of the knife with his bare hand. The knife that was inches away from touching you. You looked up at him, tears filling your eyes when you saw the blood dripping from his hand while the man holding the knife stumbled back with wide eyes "samu y-your hand-" he shushed you softly. Placing a hand on the back of your head, he pulled you in so that your face was hidden in his chest. Once he was sure that your vision was blocked, he kissed your head and mumbled the words that only you could hear "those pretty eyes were only made to look at beautiful things, angel. Not at these worthless and pathetic beings"

Because your vision was blocked, you couldn't see him flipping the knife around in his injured hand. But you heard the blood curdling scream that left that man's mouth when dazai raised his hand and stabbed straight above the man's heart. Your eyes widened and your hands trembled as you gripped his coat tightly at the same time another scream echoed the walls.

A cruel smile lifted dazai's lips as he twisted the knife in the man's flesh. His smile widening at the screams and cries of help. "you know" he mused digging the knife deeper "I would have loved to hear you talk, had you not made the mistake of thinking you could get away after trying to hurt my love" with that he pulled the knife out only to stab him again. A small whimper left your lips when you heard another scream. The one that caught your lover's attention even with all the screams and cries. It was as if your voice snapped him back from his deranged haze. He dropped the knife and looked at chuuya who nodded, ordering a few men to take away the body.

He rubbed the back of your head with his uninjured hand, mumbling "don't look back angel. I want you to only look at me. Do you understand?" your reply was a small nod as you slowly pulled back and looked up with teary eyes . His jaw clenched at the sight but he didn't said anything and wrapped an arm around your shoulder, walking towards the elevator. The whole way towards his office, you didn't say anything but your bottom lip trembled when your eyes caught the sight of his bloodied hand hanging by his side. Chuuya took a different elevator and followed you both at a distance as dazai guided you back to his office.

As you entered the room, you turned around and looked at chuuya, your voice coming out shaky "c-can I get a wet towel and a first aid kit please? " "right away" chuuya replied and you saw him speaking something in his ear piece just as the door fully closed. You didn't say anything as you took his good hand and guided him towards his desk but you felt his eyes on you the whole time. When a knock sounded, you rushed towards the door and opened it to find chuuya standing there with the things you asked for. Taking the kit and the small basket of wet towels from his hands, you whispered a small thank you and turned around not waiting for his reply.

Still chuuya nodded as the door fully closed, and he turned around, standing there on guard with his hands clasped behind him "no one is allowed to enter this floor until I say so" every guard in the hallway nodded before passing the order in their ear pieces.

You found dazai leaned against his desk, watching you silently as you stood in between his legs, holding his injured hand gingerly and started cleaning the blood off of it. He didn't as much as blink an eye but you felt your own getting teary when you saw the blood staining the whole towel. You exhaled shakily, treating the wound as gently as you could all the while avoiding his eyes.

He observed you silently. His sharp eyes not missing a single detail from your shaky hands to you avoiding looking at him. His looked away for a moment, his voice coming out eerily calm "are you scared of me?" your movements halted and you finally looked at him. Again, his face seemed calm but you didn't miss the subtle tense in his jaw and the many emotions swirling in his eyes. Holding his uninjured hand for a moment, you said "I'm not scared of you, Osamu" his gaze fell on you and he gently squeezed your hand "then why are you avoiding me?" he asked quietly and you looked down again, resuming yout work "i-i'm not'' you both know that was a lie.

Placing his pointer finger under your chin, he tilted your face up, mumbling "look at me angel" you were trying to avoid his eyes to stop yourself from crying. You didn't want to appear so weak in front of him but you couldn't help it. A single tear ran down your cheek and dazai pulled you to him swiftly, wrapping an arm around your shaking form "i-im sorry" you whimpered burying your face in his chest while dazai's brows furrowed "why are you apologizing? You've done nothing wrong sweetheart" he whispered, his hold around you tightening as he pressed multiple kisses on your head "y/n please don't cry" he buried his face in your hair, exhaling the sweet fragrance of your shampoo "y-you got hurt because of me" you pulled back slightly to look at him and wiped your tears, a smile almost pulling on your lips when you saw the visible confusion on his face "what do you mean I got hurt because of you?" his honey eyes stared in your own as he patiently waited for you to finish your sentence.

"well" you looked down "i-i feel like if I hadn't come in between, then you wouldn't have gotten hurt. It was silly of me. Chuuya and everyone else wouldn't have let you get hurt even if that man had tried to attack you. But because I came in between.." you trailed off fiddling with the buttons of his coat. He tched shaking his head with a small sigh and made you look at him "angel I didn't get hurt because of you. That shit head was thinking about swinging his little knife at me before you were there too" your eyes widened at his words "y-you knew he was thinking about hurting you?" a raspy chuckle left his lips as he nodded, taking your hand and pressing soft kisses on your fingers "of course I did" he mumbled "then why didn't you move away? O-or-" he cut you off with a small smile "because thinking and doing are two different things, doll. He was thinking about it. He wanted to do it but he couldn't. He didn't have the guts to stab the boss so he decided to be a fucking coward and tried to hurt you thinking he'd have a chance to escape" his eyes darkened at the last sentence and his arms wrapped around your form, pulling you in his deep embrace again.

You hugged him back, noticing all the tension leaving his body as he relaxed against you. His voice much more soft now "you didn't hurt me angel. You'll never hurt me. So stop worrying that pretty little head, you hear me?" you nodded pressing a soft kiss on his jaw "Samu?" he hummed nuzzling his face in your neck causing you to giggle softly as you placed one hand on his shoulder while the other stayed wrapped around him "what did that man do? Y-you looked angry when I got there" you asked hesitantly not knowing if he'll even answer it or not. He has told you many times before that the less you know, the safer you will be. But there are only rare times when dazai truly gets angry. So you couldn't help yourself but ask.

He sighed tiredly and pulled back a little to cup your face with one hand "we found out that there were a few spies in the mafia" your eyes widened at that "chuuya had managed to find every one of them expect one person" "you knew that man was the spy?" he nodded looking proud at how quick you catch on "I had my doubts but I didn't want to risk him running away so I stayed quiet until my doubts were cleared. When he saw me he got flustered and you know a flustered human will always make mistakes. He didn't have any chance of escaping so he started babbling nonsense" he didn't want to tell you that the nonsense he was speaking, included you. He was already planning on how to make him see hell on earth but you gave him a quick death by coming in between. He wasn't mad at you about it. If anything, it made him realise the difference between you and him once again. While he's out here killing people, you're saving them without even knowing. And a quick death wasn't known as a punishment in his books.

He noticed you've gone quiet again as you absentmindedly played with the locks of his hair "sweetheart" you looked at him questioningly, his hands a little desperate as he pulled you in "tell me I didn't scare you" you smiled softly cupping his face and leaned forward until your lips brushed against his "I'm not scared of you, Samu. You didn't scare me. I was just a little... I can't find the right word for it but I'm not scared of you" he looked at you quietly for a moment before exhaling and pulling you back in his arms "I love you" he mumbled kissing the side of your head and you smiled "I love you too samu"

After a few moments of him holding you, you turned around in his arms so that your back was pressed against his chest and his one arm was wrapped around your waist . He watched you silently as you gently cradled his bandaged hand close to your chest "does it hurt?" you whispered and he could only manage a small shake of his head as he felt his heart skipping a beat when you raised his hand to your lips and pressed a soft kiss on his knuckles.

He knows what you were feeling. The emotion you couldn't name and neither could he to be honest. He was damaged since the early age of 14 so blood and gore didn't have any effect on him. Catching and punishing spies wasn't any surprise either. But this was the first time you, his precious angel witnessed something like this. And he was mad at himself for every letting you see something like this. When he was walking you to his office, he was convinced that he had scared you. That you will start hating him after seeing the side of him that he desperately wanted to hide. That this morning was the last time he was able to see your sweet smile. So imagine how he must have felt when you still welcomed him with open arms. When you still kissed him and heard him and held him with that smile and gentle warmth.

As he saw you softly caressing his injured hand, he wondered how you can treat him with the same love and affection after witnessing his true side. Holding you again was another thing. He was terrified that he won't ever be able to see you and your warm smile again. It scared him more than he expected. And this was the first time his expectations had gone wrong but he was so glad they did went wrong. Because he fell for you all over again. He loved you a little more than yesterday and he held you just a little tighter as you kissed his cheek, asking if you both can go home now.

Home. He never thought he would have a place that he could call home but here he was, letting you decorate his lifeless penthouse with your yellow cushions and curtains and flower pots and what not.

Smiling softly, he nodded, holding you just for a second more before pressing a deep kiss on your lips.

"let's go home, sweetheart"

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