Mello.writes - Tumblr Posts

summary: Sukuna might not be the best older brother, but at least Yuuji doesnt seem to mind.

wc: 1.6k

a/n: wrote this instead of kinktober. oopsies. i was feeling soft, ok? leave me alone.

big brother au masterlist

Two little fists bang at the door and you find yourself awoken from your sleep. In your half-sleep state, you manage to hear the desperate rattling of a door, and you furrow your eyebrows. Then, a sniffle, and a broken sob. “Brotherrrrr!”

“No Yuuji!” Sukunas voice echoes in your shared room, and at this, you seem to jump awake. Sukuna, turns his stare from the door back to you, and his lips curl upward. “You awake? C’mon lets go for round two. Been waiting hours.”

You pull yourself up, ignoring the suggestive kisses that your lover places down your neck. Another cry is let out from behind the door, and more pounding. “I-I'll be a good boy! Please, please, please Kuna!”

Sukuna growls into your neck, pulling away and yelling back a, “Yuuji, I told you it's adult time. Go watch your cartoons before you piss me off!”

A whined, “Noooooooo!” Is let out, and Yuuji by now must be sobbing, clawing at the door like some sort of puppy.

You turn to Sukuna, and his cocky smile returns, leaning forward to press more kisses along your cheek. You pull away, a scowl on your face, and he groans knowing what's to come. “Aw cmon, don't be mad. You promised me we would go again. ‘ts not my fault the brat is a clinger, Uraume is supposed to be watching him.”

You pull the sheets away from your body and Sukuna makes a noise of complaint. “Hand me your shirt,” You demand, pulling on your underwear as quickly as possible. He rolls his eyes at your tone, but pulls the cloth over his head and throws it to you. You are quick to put it on, satisfied when it comes just above your knees. 

Then you pad over to the door, while Sukuna sighs, and pinches his brows. He isn't getting lucky for nights to come, you've already decided.

When you open it, you find Sukunas four year old brother standing with his bunny stuffed animal, and tears streaming down his face. When he finally processes that its you, he immediately drops the bunny, and stumbles over to you as quickly as he can, the cries coming louder. His arms shoot up and he is warbling a, “Up! Up!”

You are quick to abide by his request, picking him up and pressing the boys body to yours, and shushing him when he sobs into your neck. Your hands run through the near identical pink hair, and you mumble out a, “I know, I know. Sukuna is so mean. Its okay. Shhhh, don't cry.”

The boy fails to listen, and you don't blame him. He must have been really hurt by his brother blatantly ignoring him. You glare at your lover as you make your way back toward the bed. He holds his hands up sheepishly, and you roll your eyes. You crawl back into bed, resting your back on the headboard, while the four year old straddles your lap, crying into Sukunas shirt.

“You coddle him too much,” The pink haired man complains, glancing at his brother who was staining his shirt.

You scoff at him, continuing to run your fingers through the boys hair as he finally begins to calm down from his wish being granted. “So you were going to let him just cry out there?”

“It's what our parents did to me, and I turned out just fine.” You bite back a frown, but place a comforting hand on his own. His eyes flicker to you, and he nods, not saying anything. You are glad their parents are gone, and he is too. Although being left to raise his brother was more tedious than he thought, to Sukuna at least.

The last of Yuuji's tears fall, and you wipe them away with a small smile. The boy leans into your hand, loving every second of physical touch. He always seemed to want to be touching one of the two of you, whether it by means of having you carry him, or him very tentatively asking his brother to hold his hand. In those moments, Yuujis smile seems to be the brightest. 

The puffy eyed kid turns to Sukuna, while continously holding onto your arm so that you don't stop your petting. “Brother is so mean!” Yuuji complains in a high voice, but he doesnt sound upset, only mimicking what you told him earlier. In fact, a smile was already beginning to creep on the boys face, already forgetting about the situation. 

A playful finger jabs into the boys chest, and the boy squeals with delight. “Wouldn't be mean if you weren't such a brat.”

Yuuji shakes his head, a massive grin plastered to his face. “Nuh-uh! You are brat!”

Sukuna raises his eyebrows and you chuckle, nodding at the boy with approval. “Tell me about it,” You encourage, and the boy in turn giggles, liking that you took to his side. 

The older of the two holds a predatory smile, and you raise your eyebrows. “You wanna say that again, kid?”

Yuuji doesnt understand threats, nor does he know that brat is considered an insult. “Brother Kuna is brat! Like me!”

Sukuna’s hands dart out to your lap, and make their way to Yuujis sides, quickly running his fingers over the skin. The boy squeals again, and then begins to frantically giggle at the ticklish feeling. Your lover's hands are tortuous on the boy, and in turn Yuuji's laugh begins to echo in the room, as he tries to squirm away. “No! Kuna! No!” He squeals, tiny fingers clawing into you as he tries to seek help from you. 

His brother holds a small smile too, obviously trying to hold the cold front, but can't when hearing the infectious laugh. Eventually, when Yuuji seems to be loosing airflow from all his laughing, you defend the boy, batting away your lovers hands from his small body. Yuuji comes collapsing into your abdomen, trying to catch his breath, but smiling non the less. You stare fondly at him.

Sukuna, on the other hand, manages to find a paper folded in Yuujis pocket. He glances at the kid, who is already watching him with pure adoration. The kid had a huge problem of idolizing his older brother, even after being tortured by tickling and left outside the room.

Yuuji points to the paper. “Gift!”

“Did you draw us something?” You question, tapping on Yuujis nose. He smiles and nods, squirming in excitement for you guys to see.

Your lover unfolds the paper, glancing at you with a bored expression. You read right through him though. He is curious to see what his brother made, you just know it. Yuuji's hands grips onto your shirt.

Inside is three stick figures, obviously drawn by a young child. Some of the heads are too big, and they are drawn with purple crayon, sloppy, but made with love. There is a little figure in the middle, coated with pink hair, and holding onto two taller peoples hands. On his left side is a carbon copy of the little one, also with pink hair, but frowning. On his right, was the color of your hair made sloppily with marker, and a smile big enough to match Yuujis. Cute.

“That ones me!” Yuuji exclaims, pointing to the little figure in the middle. 

“I couldn't tell,” Sukuna says very much sarcastically. Yuuji doesnt understand it, so he beams with pride, excited at the idea of possibly being compared to his brother that he idolizes so.

The boy giggles, and turns to you for confirmation. “Do me and brother look alike?”

You hum in thought, dramatically tapping your chin. “Definitely. But, one of you guys happens to be way cuter than the other though.” Before Yuuji can ask who, you lean forward and blow raspberries on his stomach, chuckling when more squeals and giggles come tumbling out. Sukuna hides a smile.

A second later Yuuji comes flying out of your lap and into Sukunas. The older grabs him forcefully by the hood of his jacket, like a mother cat does to its kittens. You roll your eyes at the treatment, knowing well that Sukuna by now knows how to hold a child. But the boy doesn't mind, now sitting contently in Sukunas lap and staring up at him. “You wanna look like me?”

“Yes!”

“Good.” Sukuna licks his hand, and you furrow your eyebrows. Then he very much too forcibly runs his fingers through Yuuji's hair. You jump watching the boy nearly collapse backward at the motion of his hands, but braces himself. Sukuna has a really bad problem of treating his brother with a little to much force than what a child should be used to. But Yuuji was a strong kid, so he never barked a lick of complaint – it was only you that were biting your fingers with nerves. 

Sukuna brushes the pink hair backward, similar to his hair cut. Then he uses more saliva to spike it up. Once finished he nods at the kid, content with the hair that looks identical to his.

“Alright. Good. Now go grab a sharpie, we gotta give you some tattoes.”

Yuuji borderline has a tantrum when you tell him why you can't do that, while Sukuna laughs the entire time. But, the two of you compromise, and now there is a picture hung in Sukunas room where Yuuji is coated with black marker tattoos, identical to his brother.

summary: Yuuji finds himself sick, and it gives him a perfect opportunity to spend time with his older brother.

wc: 1.8k

a/n: its back friends. all i think about is them.

big brother au masterlist

Yuuji lets out a mucus-filled cough and Sukuna cringes. The toddler turns to him and sniffles with a frown on his face. The elder, in return, rolls his eyes but readjusts the cool rag on his brother's forehead. "Don't look at me like that. Whose fault is this? If you do stupid things, you have to pay the consequences, little pest."

The boy doesn't move; instead, he just stubbornly shakes his head. "W-Wanted to play!"

"In the rain? Without any warm clothes? You truly are an idiot," Sukuna scolds, grabbing Yuuji's water bottle from the nightstand and forcing it into the little boy's mouth. 

Yuuji developed a fever this morning after sneaking out into the backyard last night to play in the rain puddles. Now he was stuck in bed, which was hard for the toddler who was always on the go and harder for Sukuna, who has to pretend that he isn't worried sick. 

You walk into the boy's room, and Yuuji immediately looks towards you. He tears the sippy cup from his mouth and lets out a high-pitched whine, already beginning to reach his arms toward you. He knows youll coddle him, unlike his brother, and the exhausted boy was craving attention. When you make it over the bed, he reaches his hands upward to you and pleads, "Up! Up!"

You frown at the boy, already reaching down to scoop him up, but Sukuna quickly intervenes, gently slapping your hand away. "No. He might get you sick too. Brat, you stay in bed."

The toddler opens his mouth to protest, but another cough cuts him off. Then, with watery eyes, he turns to Sukuna and nods. "Yes, b-brother."

You coo at the boy, using your palm to cup his warm cheek and thumb at the soft skin. Yuuji rests his entire head on the touch, and you frown. "Poor baby," You sigh, and Yuuji, ever the one to love being doted on, nods pitifully, adding an extra sniffle for effect. Sukuna almost rolls his eyes at the action.

"Why don't you coddle me like that when I am sick?" Sukuna complains before reaching over and pulling the blanket higher up Yuuji's chest. The boy mumbles out a thank you, but the elder ignores him.

"You whine too much, act like you are dying. Yuuji isn't being dramatic, huh Yuuji?" The boy nods, gripping your arm and rubbing his face into your hand.

"No," he mumbles, "Not being dramatic!" He lets out a loud whine, and Sukuna already knows what's coming. "Feel so bad. Hurts!"

The boy seems to curl around your arm, and Sukuna sighs. "Yeah. Not dramatic at all." The kid sounds exactly like Sukuna when he is sick. Just minutes before, he proclaimed to Sukuna that he wanted to play again, even if he was still immensely ill. He just wanted attention, and it was obvious to everyone but you.

"I know, I know. I'm sorry, Yuuji. I brought you some medicine that will make you feel better." The boy's face drops at the word, and he hesitantly lets go of your arm. Sukuna barks a laugh at Yuuji's now twisted face. 

The toddler shakes his head gently, too tired to show his real disapproval. "N-No! No medicine!" It always tasted horrible to the toddler, and he knows that if he whines enough, he may be able to get his way.

Sukuna sighs, holding out his hand to you, and you drop the bottle into it. Then, he pours a copious amount of the pink strawberry-flavored liquid, made specifically for children, into the small measuring cup. 

Yuuji starts to scoot backward on the bed, trying to create some distance between the two. The elder does not let him go far – he grabs Yuuji's hand and places the small cup into it. "Now drink it, or I'm forcing it down your throat."

The boy gulps, glancing at you, who gives him an encouraging nod. Then he places it to his lips but pauses. "Go on," Sukuna demands.

"I want a treat after!" 

Sukunas barks a malicious laugh, and you raise your eyebrows at the boy. You have never heard him try to negotiate before. "Bullshit. Your "treat" is not to be stuck in bed, weakling."

You narrow your eyes at him when you hear the curse word, but Sukuna shrugs it off. Yuuji, on the other hand, eyes widen, and he shakes his head. "Bad word!" He then turns to you in confirmation, pointing at his brother. "He said a bad word!"

You nod your head at him, trying to hide a smile. You were glad that your lessons of not saying curse words stuck with the boy, even with his brother's foul mouth. "Yes, he did. Sukuna, now you definitely owe him a treat afterward."

Sukuna glares at you, but you are used to it, so you instead just flash him a grin. You have told him a multitude of times how you feel about him saying curse words in front of the kid. You didn't want him to grow up so similarly to Sukuna; as much as you love the man, his dirty mouth is not something you hope Yuuji will inherit. 

Sukuna turns his attention back to his brother. "You little–"

"Please, Kuna?" Yuuji pleads, letting out another cough that makes him nervous. He rubs at his temple.

"Fine. Whatever. Just drink it, you manipulative brat." Yuujis eyes lighten up, and he brings the artificially smelling liquid to his mouth, cringing but drinking the entire thing. When he pulls away, his face is contorted in disgust, and he looks toward you. You run your fingers through his hair and praise the small boy, grabbing the small cup from his hands. 

Sukuna curtly nods his head. "Good. Well, sorry to burst your bubble, brat, but we are out of chocolate. No treat for you," He fake pouts at the boy, but Yuuji, in turn, just shakes his head with a small smile.

"Not what I want."

Sukuna raises his eyebrow, thinking for a second, before sighing. "We are out of popsicles too."

"Not that either!" Yuuji shakes his head with this one, and you cock your head to the side in confusion.

Sukuna borderline growls at the boy. "We are not watching Human Earthworm 2. Last time you nearly pissed yourself from how afraid you were." You laugh at the memory, remembering how much Yuuji pleaded to watch it for days, only to have it be turned off twenty minutes into the movie. The poor boy would make Sukuna walk him to the bathroom at night because he was so afraid of being alone in the dark.

Yuuji pouts at him, and another small cough it let out. You grab him some more water, and the boy mumbles a thank you before turning back to his brother. "I wasn't scared! And no, not that either!"

Sukuna pinches the bridge of his nose, trying not to lose his temper. "What do you want then?"

The smile on Yuuji's face returns, even with the pinkened cheeks and the little bits of sweat on his temples. "Want Kuna to cuddle me!"

Your eyes widen, and you can't stop the laugh that leaves your mouth. Sukuna, on the other hand, goes silent for a long moment. "Not happening. Pick something else."

Yuuji whines out, shaking his head stubbornly. "Nooooo. You said I get a treat!"

"You are going to get me sick."

The boy sniffles at him, shaking his head. "Th-Thought brother was the strongest…"

This makes you grin, knowing your lover's ego well. And just like you thought, Sukuna lets out a dramatically large sigh. "Fucking–Fine. Whatever. Scoot over." You and Yuuji both let the curse word slide, being shocked at him actually agreeing.

Yuuji slides over, and Sukuna forces his way under the blankets beside the boy. You sit and watch as Yuuji basically scampers up Sukuna's chest until his head is placed in the elder's neck and his entire body is on top of the man. "Okay, really?" Sukuna grumbles, and you chuckle at him. "Are you some sort of spider monkey now?"

The boy hums in agreement, pressing himself impossibly closer to his brother. You take this time to stand up from the bed, having no room to fit you both. Sukuna watches you begin to leave and frowns at you. "Where are you going?"

This was a perfect time to give them some bonding time. So you shrug, "I'll be right back."

"You better be," Sukuna grumbles and Yuuji coincidentally sneezes into his neck. The man's whole body jerks, and he cringes. "Hey! None of that, that's disgusting!"

Yuuji whimpers, wrapping his arms tighter around his brother as if he was afraid to leave. Then he whispers an apology, and Sukuna rolls his eyes again.

You grab the door to the handle and step outside. "Well, have fun you two. Yuuji, feel better!"

Yuujis cranes his neck to look at you and waves back to you with a small smile, content in his position. Sukuna, on the other hand, glares at you. "Dont you dare leave me here with this brat."

You huff a laugh, ignoring him and already planning what movie you will watch by yourself. "Love you!"

"Hey!" He yells when you shut the door on him.

And, of course, luck is not always on Sukuna's side. When you come to check on them two hours later, you find them both passed out – Yuuji practically smothers Sukuna with his tiny body, drooling on the elder's face. You leave them like that, not thinking much of it.

But three days go by, and somehow Sukuna finds himself stuck in bed with a fever. He never dared to mention that Yuuji probably got him sick, his pride getting the better of him. 

You and the kid walk into your shared bedroom, Yuuji with a massive smile, finally feeling better, and you with a content grin. Sukuna slowly peers over to the door and groans out loud and dramatic. 

"Dont worry, Kuna! Dr. Yuuji is here to take care of you!" He cheers, grabbing his toy stethoscope and shuffling over to the bed. He manages to climb onto the bed with his brother without much trouble, and you follow him, sitting on the bed next to your lover. Like you did with Yuuji, you ran your fingers through his hair, trying to comfort him.

Sukuna peers at you, eyes slightly lighting up and a familiar grin pulling at his face. You already know something inappropriate is about to leave his mouth.

"I would feel so much better if you were in a nurse costume right now." But before you could try to reply, Yuuji shuts him up by shoving a toy thermometer into his mouth.

Summary: four-year-old Yuuji didnt mean to bring up Mr. Gojos crush on you, which of course, leads to Sukuna's harsh teasing.

cw: fem! reader (reader gets referred to as girl, pretty, and mommy), curse words, suggestive language, lion king spoilers (lol)

wc: 1.8k

a/n: i love making sukuna an absolute menace. poor yuuji tho. i think i am going to introduce gojo as a character, because I think it would be entertaining to piss Sukuna off lol.

big brother au masterlist

“Su-kuna!”

“The fuck did you just call me?”

“Language,” You scold, not peering up from your book. Yuuji lays sprawled out on top of the both of you – his head in your lap, and practically purring in content when you gently pet the top of his head, while his little legs are on Sukuna’s thighs. 

Yuuji giggles into your shirt, shaking his head mischeviously. “Bad word Su-kuna!”

In an instant, you feel the toddler being ripped away from your lap with a tiny screech. The noise startles you, and you perk up from your book to look to where the boy has gone to. But, you aren't surprised to see him dangling in the air by his ankle – Sukuna’s long fingers skillfully hold onto Yuujis chubby little leg tight enough to not drop him, but gently enough to not cause physical harm. 

The boy doesn't seem to mind this position, being in it so frequently. Giggles and squeals leave the toddler's mouth as he stares at his now upside down brother. “You learning how to speak correctly?”

Yuuji nods his head, and his hands try to reach for Sukunas shirt. You rest your head on the man's shoulder, chuckling at the boy who was squirming in the air. “Uh-huh! F-Fush-i-guro taught me!” The dark haired toddlers last name was hard to pronounce, and it was amusing watching how Yuuji sounded it out.

Sukuna makes a loud groaning noise and you cover your mouth to hold back another laugh. “Of course you made friends with Gojo’s new brat. First he hits on my girl, and now his new kid is gonna manipulate this idiot.” He shakes Yuuji in the air to demonstrate his point, ignoring the squeals. 

You roll your eyes with a laugh. “Just because Megumi taught Yuuji how to say your name correctly, doesn't mean the kid is manipulating him. Y’know Yuuji struggles with words sometimes.” You watch as the child in turn shakes his head in defiance, letting out a “Nu-uh!” that only makes you smile. You turn back over to your lover, kissing his cheek. “Aw, does it make you sad that our little Yuuji is growing up?”

“No,” he quickly rebuttals, “Brat isnt growing up fast enough. I am mad that you're not denying the fact that the white haired idiot is flirting with you.” You know that wasn't the full truth, but alas, Sukuna was extremely stubborn and would never admit that he didn't want his brother to grow up. 

“Fush-i-guro says Mr. Gojo thinks you are pretty!” Yuuji announces, beaming at you from the air. You hold back a wince, smiling awkwardly back at the innocent words of the toddler. You watch as the boys cheeks begin to flush from all the blood rushing to his head, and immediately as if sensing it, Sukuna flips over the boy and instead places him on his lap, holding onto the back of his neck.

The action makes you smile, noticing the thumb that rubs gently at the pale skin. But when you glance at Sukuna, you notice quickly that he was anything but happy. Sukunas dark eyes twitches, flickering to you, and he speaks between his teeth. “Did he now? I may need to have a talk with Mr. Gojo next time I pick the little pest up. Does Fushiguro say anything else?”  

“Sukuna,” you whine, realising that the hold on the boys neck was not out of affection – instead was used to trap the boy while he was questioned. “Y’know Gojo is alot. He just wants to–”

“Fush-i-guro says Mr. Gojo has a crush on Y/N!”

“Yuuji!” 

“B-But, Y/N has a crush on brother,” the boy concludes, furrowing his eyebrows with a small nod. “Right, Ku–um–Su-kuna?” He turns up to his brother, doe eyed with his head slightly cocked to the side in question. 

In response, Sukuna ruffles his hair, nearly sending the boy landing on his back. But, instead he giggles at the rough treatment, shutting his eyes and trying his best to stay upward. “The biggest crush. You make sure to tell the little brat that. Or else Mr. Gojo is going to try take her away.”

Your eyes widen and you push at his broad shoulders. “Sukuna! You're going to get him all worked up!” You exclaim, knowing the very sensitive (regarding you or Sukuna) child very well by now. You turn to the boy, whose own eyes widen as he trying to process the words. “Gojo is not trying to take me away.”

“He is going to take her away if you don't do anything, and little Megumi is going to have a new mommy.” Sukuna was grinning at the boy, as if his brother's fearful expression pleased him. You knew that he was being purposely dramatic – Gojo wasn't even technically Megumi's father, if there was a chance that you guys would ever get together (near zero) you would definitely not be the boy's new mom. But alas, Sukuna continues on with his words. “Thats why whenever you see the two of them talking you have to make sure you to scream as loud as possible.”

You cover the mans mouth before you he can spewl any more nonsense, but it was too late. Yuuji was already tearing himself from the man's lap and into yours – his lips begin to wobble and his eyes flood with tears. “Is-um-is that what you two talk about when I am with Mr. Nanami,” he warbles, thinking back to the multitude of times he has held onto his preschool teachers hand and watched you smile at the white haired man. 

“No, love,” you reassure, turning your attention instead from scolding your lover to consoling the child. “Sukuna is being mean again. Don't listen to him. Mr. Gojo and I are friends.” You ignore the look that Sukuna shoots you, showing how displeased he is at the idea of you being friends with his least favorite person. 

The boy sniffles, wiping his little fists on his face. “I-I dont want you to be Fush-i-guro’s mommy. You have to stay with me and Kuna! P-Please?” He doesn't even attempt to say his brother's name correctly, forgetting how he started the conversation all together. He was focused on trying not to cry, because his brother was sure to tease him, but it wasn't working out very well.

You kiss at his chubby cheeks, shaking your head with an exasperated look on your face, wondering how the hell you got to this conversation. “I am not, promise. I'm not going anywhere. Even if your brother is the worst, brattiest, malicious person alive, I have kinda grown attached to him. Besides, if I left who would I have movie nights with?”

“I am not a–” You shoot Sukuna a nasty glare, and he in return lets out an astonished laugh, but shrugs without care.

Your words make Yuuji perk up from your lap, and his eyes widen with glee. “You like movie nights too?” He was always begging for the three of you to watch movies together, but Sukuna always denies him considering it would end up being a cheesy Disney movie that Yuuji would fall asleep not even twenty minutes into.

“I love movie nights. Do you want to have one tonight?”

“Woah, woah, woah,” Sukuna butts in, and you spare him a glance. “Babe, we have plans tonight, remember?” He tilts his head to the side suggestively and you roll your eyes at him.

“Not anymore. Me and Yuuji are going to watch…”

“Human Earthworm 2!” The boy interjects, completely forgetting about his previous experiences with the movie, not good ones.

You poke at his cheeks, shaking your head. “I was thinking The Lion King.” 

“Yes!”

“No,” Sukuna groans, covering his eyes with his palm.

You look at him with furrowed eyebrows. “No? Why are you putting your input in? You're not watching it with us.”

Sukuna, never have been told this before, looks appalled. “The fuck you mean?”

“Bad word!” Yuuji points to him in accusation, but Sukuna just ignores him.

You cock your head to the side, a sly grin pulling at your face. “You're not invited.”

“Why not?”

The two of you make eye contact for a long second, and after a moment or two, Sukuna sighs. “You're really mad about that?” You don't say anything, just continuing to stare at him. “Okay fuck–Yes that is a curse word, astute observation you brat. I am sorry for making the kid cry again.”

“And?”

Sukuna narrows his eyes at you, but you hold your ground. Then, he turns to the boy with a sigh. “Dont scream when you see Gojo and Y/N talk, alright?” He jabs his finger into the boys chest and Yuuji nods his head rapidly in understanding. But, a foxish grin pulls at the mans face and he says, “Instead…The moment you hear him talk to her, you bite his leg.”

He barks a laugh at the confused face of his brother, but when he looks up to you, the smile falters. “Okay, c’mon it was a jo–”

You point your finger to the door. “Couch.”

“You can't kick me out of my own room!”

You don't move your finger. Yuuji glances at you, cocks his head to the side, and then mimicks your action. “Couch!”

The three of you go silent for a long minute, and at this point the boy's hand begins to tremble from holding his hand out for too long. Eventually when Sukuna realizes that there was no point of reasoning, he lets out a dramatic sigh, before crawling out of bed. 

When he notices your smug smile, he flips you off and you can't help but laugh at that. “I am coming back after the movie is done, ya hear?”

“If Yuuji does not fall asleep,” You tease in return, knowing the boy well, and Sukuna rolls his eyes. 

His eyes flicker to the boy who was snuggling up to your chest, trying to find a comfortable position to watch the movie in. Sukuna chuckles to himself, opening up the door, before turning back to the kid one last time. “Hey brat,” he calls.

“Hm?” 

“The father lion–Mufasa. He is my favorite character, so you'll bound to like him a lot. In fact, I sure do wonder if you'll get attached,” he muses, and your eyes widen when you realize what he is saying. Anything that is linked with Sukuna, Yuuji immediately falls in love with. This was bound to cause hysteria. “Enjoy the movie guys! Y/N have fun!” He calls, before shutting the door.

You pause for a moment, sighing into your hand. “Kuna likes the father lion? I want to see!”

You tried everything to avoid turning on the movie after that. But Yuuji, like his brother, was stubborn, and he desperately wanted to see the lion. He grew attached very quickly in that short period of time.

Deep laughs rumble through the house when Yuuji begins to sob over the animated lion's death. You lock the door, and Sukuna stays the night on the couch. 

A/N: the big brother drabble i promised u guys <3

Big Brother Au Masterlist

"No, no, no. No. This is not how this works." You hear Sukuna complain as he walks into the living room and assesses the situation. He had just got off work, was fresh out of the shower, and was planning on cuddling (of course, he would never use that term) with you on the couch for awhile. A good way to decompress as he complains about all of his useless coworkers while you hum and pet his hair.

But, alas, you seem to be preoccupied with a certain 40 pound toddler nuzzled up a little too comfortabley on top of you. Your hands were running up and down Yuujis hair, petting the boy while he drools onto your chest. His soft snores fill the room and you have to keep the tv volume on low so that you dont wake him.

The boy was where Sukuna was supposed to be laying. So he walks up to the two of you, and before you can even process what he is doing, Yuuji is dangling in the air by the back of his sweatshirt. You begin to protest when the warmth of the child is being taken away, but Sukuna just places the boy by your side, before setting his own head in your lap, and curling up on the couch.

Everything was too quick for you to process and before you know it, Sukuna had forced your hand into his hair, hoping that you would pet him as you did to Yuuji.

Said boy was slowly waking up from the movements, and you cringe knowing how fussy he gets when he is woken up from his nap. Sukuna definitely knows this too, so you spare him a unamused glance. "What is wrong with you? Did you really need to move him?"

Sukuna blinks up at you, furrowing his eyebrows for a moment, before shutting them again, unbothered. "You are my girlfriend. I get priority of where I get to lay. 's not my fault the brat took my spot."

Yuuji rubs at his eyes, grabbing onto your arm as he looks at his brother. "Kuna?"

Sukuna hums, but doesn't respond. Yuuji then gently grabs onto the elders pink hair and lets out a small tired whine. "Was there first, Kuna."

"Dont care. Go to your crib if you want to sleep." His face was buried in your stomach, and he lets out a deep sigh as if to almost rub it in the childs face.

"Sukuna, you know he doesnt sleep in the crib anymore." You turn to Yuuji, pressing a kiss to his temple. "You are a big boy now, huh?"

The boy seems to wag his tail at the words, nodding his head and pressing his face into your side. "Y/N, can we cuddle again? 'm sleepy..."

Sukuna doesnt wait for your response before he says, "Im not moving."

You sigh at him and Yuuji begins to pull on Sukunas hair — his sleepiness turning into displeasure very quickly. "Kunaaaaa. Meanie, meanie, meanie!"

"Sukuna..."

He blinks at the boy whose lips was beginnig to wobble, and pulls the tiny hand off of him. "Dont get pouty on me. Get your own girlfriend to lay on, she's mine."

You raise your eyebrows at the exchange, but Yuuji's face shifts from nearly being about to cry to anger. Only recently has Yuuji been putting up a fight against Sukuna's teasing, and it was always endearing to watch. "She's mine!"

A smile tugs at your lips and you let out an exasperated laugh, amused by the boy's words. "Oh?"

Sukuna's head wips toward the kid, glancing at the face that was seconds away from having a temper tantrum. "In your dreams, little pest. 'sides, she likes me more than you." He wraps your arms around your waist, grinning at the boy.

You open your mouth to respond to the ridiculous claim, but Yuuji grabs your arm and wraps it around his body, trapping himself between your side and arm. "Nuh-uh! She told me I am her favorite boy!"

Sukuna leans forward and pinches the child's nose, pulling a whine of complaint from Yuuji. "Favorite boy. I am a man not a boy. And her overall favorite person. Nice try."

The boy lets out a noise of displeasure, and you couldnt help but compare the sound to a growl of a tiger cub. Tears threaten to fall from his face, and he shakes his head. "Thats not true!"

"It is. Sorry to burst your bubble, brat."

Yuuji whines out your name and gives you a teary, puppy dog like look. You ruffle his hair, and shake your head, reassuring him. "You know thats not true. You gotta stop listening to your brother. I love you both equally."

This time Sukuna lets out his own whine of your name, and you laugh. "You two are so dramatic," you sigh, before a grin pulls at your lips. "Besides, neither of you are my favorite."

In record time, Sukuna is sitting up from your lap, staring at you with a deep frown. Yuuji holds onto you tighter, shaking his head and whining into your clothes.

"Spit it out already," Sukuna growls, glaring at you.

"Its not F-Fush-i-guro, right, Y/N?" the boy whispers, thinking about what Sukuna had said earlier to him. He was sure to cry in record time if that was true.

But, you just shake your head, and then spare both of them a wicked grin. "Its Choso of course!"

The two of them pause for a moment, looking at eachother and thinking about their older brother. They seem to have the same opinion on the matter, and they held nearly identical frowns.

"Thats not funny!"

"Y/NNNNN!"