Sukuita twin au but with a maki/mai dynamic.
Sukuna being born with an innate curse ability. A /strong/ one. He belongs to no curse family yet he could topple most of them with enough training. Hes recruited when he’s 15 bc he’s spent his youth in the countryside protecting yuuji
Yuuji on the other hand, has zero cursed energy. He can’t see them or sense them and wouldn’t believe Sukuna if he didn’t watch a tree shatter when his brother punched something invisible.
Yuuji’s grateful that Suku protects him, he adores him down to his very core
So yuuji doesn’t want to admit that he feels useless when the school offers Sukuna a position but tells him “your brother will only get in the way, he cannot come.”
Sukuna doesnt take kindly to that and after a Lot of threats yuuji is allowed to visit the campus anytime he wants
It’s wonderful but it drives a chasm between them. Yuuji is now alone in their little home, only the alley cats to keep him company.
Sukuna is now surrounded by friends, comrades, he’s doing it to make sure Nothing can ever hurt yuuji but has damaged their bond as a result
When they talk on the phone Sukuna says wild fantastical things about curses and techniques and things that make yuuji’s head spin.
He can only fake laughter and ache when Sukuna doesn’t press him on his mood Bc “fushiguro and Kugisaki want to go train. I’ll see you later”
So yuuji waits and yuuji yearns.
It’s not until three months in that he has enough money to travel to Tokyo to see Sukuna.
Yuuji can only pray it’s a good surprise and Sukuna Does light up when he sees him. But yuuji is quickly pushed aside even then and wonders why he bothered
There’s something about a “goodwill event” and filling in for second years and oh yuuji you can stay in my room before he’s abandoned to wander the campus alone.
Which is a bad idea. Most people he comes across either don’t like Sukuna or are disgusted that yuuji is there
It gets to be too much and Sukuna isn’t there to protect him so yuuji falls back on his new safety net. He escapes and folds himself up into a tight space until he can calm down. This one just so happens to be in a breezeway between two vending machines.
It’s not until he heard a girls voice complaining loudly that he thinks this might’ve been a bad spot to hide.
Shes walking by alone, a tall older girl with glasses and a ponytail and is that a SWORD on her back-
Yuuji shifts and her eyes are on him in an instant
There’s surprise, then confusion “Sukuna? How the hell did you get over here so fast?” Then realization sets in. “Wait, youre his brother aren’t you.”
Yuuji wants to die.
“Please dont tell suku-nii,” he begs bc he can only begin to imagine what Sukuna will do
He’ll force him back on the train and tell yuuji he can’t come back and yuuji knows he’ll break for sure if that happens.
The girl seems to understand though and simply reaches between the vending machines to offer him a hand.
“Cmon get out of there and let’s go sit and talk”
Her name is Maki, she’s a second year and she can’t see curses either.
“It’s the glasses,” she taps them with a finger as they sit on a bench under an oak tree.
“I wont let anything stop me from becoming a sorcerer. Fuck anyone who gets in my way.”
Yuuji cant help but be in awe
“But, the energy thing?” Sukuna had told him only beings with cursed energy could fight curses.
Maki’s grin is sparkly and smug, “there are cursed weapons, you don’t need any else if you train with those.”
And yuuji feels his chest Burn with an indescribable anger
“I could’ve..come here?” (I could’ve been useful?) is what he doesn’t say but maki understands because she’s the same.
“It’s harder for people like us, these shitty elites look down on us for not being totally like them.” She rolls her eyes, adjusting the sword strap absently
“I can teach you if you want.”

Yuuji feels his breath leave him in one sharp noise. “What?”
Maki tries to look impassive but her eyes are burning with promise. “I’ll take you on as my apprentice and I’ll teach you and you can tell your brother to shove it up his ass.”
Yuuji can’t even begin to think about how he’d tell Sukuna. That seems to cross his face because a hand grabs his wrist to jostle him.
“Dont do it for him,” maki says, “do it for you. You don’t wanna be left behind right?”
And he doesn’t so he nods and says “I’ll do it. Sensei”
Maki pinches him for calling her sensei but her smile is fond and he hasn’t felt so relieved in years.
Finally. Sukuna can be the one watching his back.
Finally. Yuuji can be the one protecting people from cursed spirits.
But- “senpai?” She doesnt pinch, “where will I stay?”
This thought seems to have occurred to her because her grin is devilish. “With me of course. I’m from one of those big families but I moved out and got a place close by.”
Living with a girl, hiding from his brother, Yuuji flushes but nods his agreement. “Okay, whats first?”
“First,” maki says as she makes to stand. “We get you some glasses and a weapon and see what kind of stuff you do best.”
Yuuji pops up off the bench beside her, obedient and wondering. “I can punch?” He supplies and maki hums, “punching huh? I think I can work with that.”
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