Thread by @SwifeGojosatoru

SukuIta/FushiIta Thread: Temporary

Warning/Tags: Shotacon, Yandere!Sukuna, Possessive Shotakuna, Oblivious but good older brother!Yuuji.

May make a sequel that’s nsfw but for now Enjoy!

@IFLYuuji

Yuuji was a good big brother.

He was caring, protective, made sure his baby brother had whatever he needed, and basically spoiled his baby brother.

If Sukuna wanted something, all he had to do was look at Yuuji and give him a pout while calling him “Nii-san” and Yuuji would be putty in his hands.

Yuuji saw Sukuna as his adorable brother who had horrible nightmares and so even at 10 years old he /had/ to sleep in the same bed as Yuuji or he’d cry.

Yuuji’s friends saw Sukuna as what he truly was. A terrifying 10 year old who was unhealthily obsessed with his older brother-

- and definitely wanted a relationship he should never have with his own brother.

“It’s really storming outside..” Yuuji frowned and looked at his friend who sat on the couch, books splayed out on the coffee table.

“Why don’t you stay the night, Megumi? It’s late and storming, I can’t let you drive home without worrying.”

Megumi looked up from the homework they were working on together.

“You sure? I can just call Gojo-sensei and-”

“I’m absolutely sure! It’ll be fun! We don’t have class tomorrow so we can stay up and actually have fun!” Yuuji smiled excited

Megumi couldn’t help but smile a bit at his cute friend, maybe he could actually make a move tonight.

He could finally confess his feelings-

“Nii-san! Aren’t you done studying yet? You’re so slow!”

Right. Megumi almost forgot about a certain brat.

Standing at the top of the stairs in the small two story house was Sukuna Itadori. The small brat glared down directly at Megumi even though he was speaking to Yuuji.

His arms crossed and even though he’s just a child, Megumi feels unnerved by the glare. If it wasn’t for Yuuji standing right there, Megumi thinks the kid might actually try and kill him.

“Oh Kuna! It’s late and storming so Megumi is gonna stay the night.”

“What? No!” That set the little boy off, “It’s Friday! This is our night!”

Megumi watched as the brat stormed down the stairs and over to Yuuji.

It always shocked Megumi how someone like Sukuna could be related to Yuuji, a literal ray of sunshine.

“I know but I promise I’ll make it up to you alright? It’s just for tonight.” Yuuji smiled, ruffling his baby brother’s hair.

Megumi could see the blush making it’s way on Sukuna’s face. Unease settling in Megumi’s stomach.

None of their friends knew how to approach the topic of Sukuna’s strange behavior towards Yuuji.

Yuuji obviously had no idea and simply wanted to be a good brother, no ill or weird intentions behind his actions. Yet, it is that innocence that has led Sukuna to be the way he is.

“And where will he sleep?” Sukuna pressed

“Huh? Well my room obviously. I can just sleep on the floor or couch.” Yuuji replied casually

Sukuna’s face turned into a scowl while Megumi’s face turned bright red at the thought of sleeping in Yuuji’s bed.

“It’s one night. Let’s just get along please? For me?” Yuuji gave a kind smile, looking between Megumi and Sukuna.

The soft tone and cute plea at the end was too much. Both boys nodded, too stunned by the adorable boy in front of them.

Any plans Megumi had to confess were quickly shot as Sukuna refused to leave Megumi and Yuuji alone in a room the whole night.

Yuuji simply thought it was just Sukuna didn’t want to be lonely but whenever Yuuji wasn’t looking, the brat would scowl at Megumi -

-daring him to try anything.

While they watched a movie on the living room couch, Megumi finally got some reward for his patience when Yuuji’s head rested on his shoulder, the cheerful boy falling asleep on him.

Megumi felt his face heat up, putting an arm around the boy carefully. His dark forest green eyes glanced over to see Sukuna staring at the two but unlike before-

He didn’t have a scowl.

In fact, he looked at them blankly. No emotion whatsoever.

That scared Megumi more than he’d like to admit.

He tried to focus back in on the movie but between his crush sleeping against him and his crush’s little brother staring at them made it hard to focus on anything besides his racing heart from fear and excitement.

Finally the movie came to an end, credits rolling with some random song playing in the background.

Megumi looked at Yuuji’s sleeping face, prepared to carry the boy to his room when he noticed movement from his peripheral vision.

He looked up to see Sukuna turning off the tv, the only light source now being the dim kitchen counter light that no doubt was going to go out soon.

Sukuna turned to Megumi, his piercing red eyes staring directly into Megumi’s soul.

“...Do you really think this means anything, Megumi Fushiguro?” Sukuna asked him, his voice even but Megumi could hear the rage hiding behind it.

“I think I have a better chance than his own little brother. Seriously, you need to get over this weird crush-” Megumi was cut off-

- when he noticed a glint of light in Sukuna’s hand.

A knife.

When did he-?

“It’s because we’re brothers that I know he was made for /me/. He is /mine/. You? You’re temporary. Just something to keep him occupied until I get older.”

Megumi glared at the child.

“I can just tell Yuuji all that you’ve said. Maybe then he’ll see you for the monster you are.” Megumi spit out, pulling Yuuji’s sleeping body closer, protectively.

“And who will he be more likely to believe? You? Someone he only met this year?-

- Or me, his /sweet/ little brother?” The grin Sukuna gave him was full of malice and madness.

Was he even really related to Yuuji?

“You can try. Try and get Yuuji’s attention but it’ll only be temporary. /You/ are temporary. His attention will only ever be for me and -

-If by chance you do squeeze your way in, I’ll just remind him and you who Yuuji really belongs to.”

Megumi felt a shiver run down his spine at the threat, the young boy smiling sadistically as he twirled the knife in his hand with ease.

“I’ll make sure he knows what you really are before then.” Megumi countered.

The two stared at each other, neither back down until a soft groan was heard snapping them both out of their stand-off.

Yuuji remained asleep, peaceful as ever.

Megumi smiled at the sight before looking back up, pausing when he saw the younger was gone. The knife stabbed into the table.

He tightened his hold on Yuuji, he wouldn’t let that brat hurt Yuuji as long as he had anything to do with it.

End~