Chapter Text
Yuuji wakes up with a weird sensation around his chest. Suddenly, his t-shirt is too tight, and it makes him uncomfortable. Which is weird since he sleeps in those for years and such a thing never happened before. The boy blinks sleepily, trying to comprehend reality. Now he can tell that his entire body feels oddly wrong. Is he sick? Yuuji was okay until yesterday, though. After exorcizing the curse on a mission, he just went with his usual routine, and nothing seemed amiss.
The boy sits up on his bed, yawning and glancing at the clock. It's early past eight on Saturday morning. He doesn't really have any plans for today yet, but there is no school and no missions assigned, so Yuuji finally has some free time! Maybe he should rewatch the entire Human Earthworm series?
Then he looks down and blinks. His breast is… swollen? No, that's not the right word. The boy blinks again, taking in the usual loose t-shirt tightly holding his chest, and he gapes. It's almost like Yuuji has... boobs?
“No way!” He laughs because that's ridiculous.
The boy nervously brings his right hand to tug on his hair and pauses.
What the hell?!
Yuuji jumps out of bed and makes a beeline for the bathroom to stand in front of the mirror. After seeing his reflection, he makes an inaudible noise and then stares.
Because he can tell that's still him since the same face always looks at him back in the mirror. But suddenly his hair reaches his shoulders, his entire body seems more petite, his waist slimmer, his hips wider, and his chest fuller…
Oh no.
He quickly tugs at his waistband on his boxers and peers there to find... nothing?!
His dick is gone.
What the fuck.
Yuuji is too afraid to inspect it more; no, he doesn't even want to, so he leaves his lower half, focusing on the upper part. The boy—because even with evidence, he's still a boy—raises his t-shirt with an effort and gapes at the sight.
That's a real woman's breast. He takes a deep breath and dares to touch his right boob. Fuck, it even feels real?! He squeezes lightly and makes a hiss because it hurts a bit. It's so sensitive. Is it normal?
No, wait. There is nothing normal in this situation! How is it even possible?! He became a girl!
Yuuji sees his dumbfounded expression in the mirror while gripping his chest. He lets go, like caught on something bad, and tries to pull the t-shirt back, but it's still too tight. He tosses it aside and comes to his wardrobe, trying to find something more loose. He picks a t-shirt that is a size bigger than his usual ones and tries it on. It's still too tight in the breast area, but it's better, so Yuuji sighs with relief. Now his boxers are annoyingly too big, but he doesn't have anything else.
The boy goes back to the bathroom to stare at his new body more. He's kinda… pretty? Yuuji leans closer to the mirror and flips his now longer hair experimentally. Woah. He looks so feminine?!
No, stop. This is not the time to admire his sudden beauty.
What caused the change?
He woke up like this. So, maybe…
“Sukuna?” Yuuji calls hesitantly. Nothing happens. “Sukuna!” He tries, more desperately this time.
His left marking snaps open, a red eye appears, and a mouth formulates underneath.
“Brat.” A gruff voice grumbles. “What do you—” Sukuna stops abruptly, and his eye blinks, then surveys Yuuji's body in the reflection slowly.
“Is this your doing?” The boy asks, and holy shit, even his voice sounds higher, like belonging to a girl.
But Sukuna just stares.
And stares.
Then he burst out with laughter.
And this is not his usual sadistic cackling or a mad laugh indicating ill intent.
He sounds genuinely amused.
“Stop laughing!” Yuuji whines, but his voice cracks at the end, which makes Sukuna laugh even harder.
“Brat.” He utters finally between the breaths. “Who cursed you like that?” Sukuna giggles.
Giggles!
Yuuji pouts. “I thought it was you.” He admits, sulking.
As much as seeing his vessel with a feminine body entertains Sukuna—he hasn't laughed this hard in hundreds of years; just what kind of luck does this boy have?— Brat also gained some sudden charm with it. Those curves are alluring, especially since his vessel is wearing, or not wearing, much. Showing skin feels wrong to Sukuna, combined with the current expression...
He clicks his tongue. “Don't make that face.” Sukuna is suddenly irritated. Because he's fully aware of how many males reside in this school. “I see now. This is going to be a pain.” He sighs deeply and scowls.
Brat frowns. “So you don't know what caused it or how to fix it?” He prods.
Sukuna sighs. “It should pass itself.” He offers.
Yuuji wonders how long it is going to take and how he is supposed to live right now. An even more urgent issue is slowly starting to press on him. He needs to pee. How to do that with, well…? It's definitely different. But also, Yuuji has to get himself more comfortable clothes.
He hums in thought. “I guess I need to call Sensei, then.” The boy decides and leaves the bathroom to search for his phone.
Did Sukuna get it right? Brat's Sensei? The most annoying and irresponsible adult out there? With his vessel in this body alone in one room?
“You are really going to invite a man while looking like that?” Sukuna says it incredulously, and his vessel pauses.
“Oh, you are still there?” He's surprised. How rude. “What's wrong with that?” Brat resumes his search and finds this weird device that makes him able to contact others under his pillow. “I need Sensei to borrow me some clothes, because I don't think anyone else's will fit right now.” His vessel mumbles absentmindedly, playing with that thing in his hand.
Sukuna can't believe what he's hearing right now. His vessel is a man himself, yet he is unable to use his imagination a bit. It's basically like marking someone's as theirs.
“You are going to wear other man’s clothes.” Sukuna sneers, repulsed at the thought. “Are you insane, Brat?” He needs to ask, because it's just hideous.
Yuuji frowns, taken aback. What's wrong with borrowing some clothes? Sensei will definitely give him something warm and comfy. It's better than going anywhere in what he's wearing now. And asking Kugisaki... Well, that would be awkward.
“Why are you getting so worked up about it? It's not like you at all.” The boy points out and almost taps at the calling button near Sensei’s name when he feels his body hitting the bed, and Yuuji falls.
He finds himself in an entirely different place, being... teleported? No, more like, pulled into? It's weirdly climatic here. Dark tones, redness that brings blood to mind, and bones scattered everywhere. Is that a shrine in the background? Then he's caught in strong, steady arms, and...
“Sukuna?!” Yuuji realizes this out loud and gasps. “Where are we? What's going on?” He wants answers, but Sukuna just shifts him in his arms. Why is Yuuji being held in a bridal carry?!
“Welcome to my domain, Brat.” Sukuna smirks, and a moment later, their surroundings shift.
The boy has only a second to realize that they are in a room now, and is this Sukuna's bed? Yuuji is thrown at it unceremoniously, and he wheezes from the impact. Then his hands are restrained on both his head sides by Sukuna's own ones, the boy pinned to the bed entirely, with Sukuna sitting on him, keeping him in place.
“Are you aware of how you look right now?” He leans closer to Yuuji’s ear. “Like a bitch.” He murmurs.
The boy freezes, overwhelmed by sudden, cold panic.
“I didn't taste a woman in decades.” Sukuna purrs, and Yuuji’s breath hitches. The boy glances at him with wide, fearful eyes to find there only a hungry expression of a man wanting to ravish his prey.
“No.” Yuuji tries to move, but he can't. He wriggles harder, to no avail. “No, no, no!” His limbs don't listen to him, being kept under Sukuna's strong hold. Yuuji makes pathetic, wild noises.
Sukuna pulls away a bit to observe the reaction impassively. He would feel bad—no, that's a lie; a part of him enjoys what he's seeing and hearing—if it weren't for his vessel's thick skull. Brat just can't seem to take a guess, so better show him the danger before someone actually attacks him.
“Can you overpower me in this body, Brat?” Sukuna asks with sudden seriousness, and Yuuji gasps, shaking his head and whimpering. “Can you fight me right now?”
“No!” The boy cries out, frightened to his core.
Because Yuuji realizes that in a girl's body, he's not as strong as he usually is. And now he can't do anything to free himself.
“Please, don't.” The boy pleads, tears gathering in his eyes. “Please, Sukuna. Don't.” He chokes and closes his eyes, trembling all over his body in terror.
With confusion, Yuuji realizes that the grip on his hands has ceased, and he opens his eyes hesitantly. Sukuna looks at him with a frown.
“Don't cry, Brat.” He says it in a hushed voice and lets go of the boy's hands completely to sit up and wipe away his tears. Yuuji sobs at the gentle touch, his body still tense and unsure. His mind is a mess. Is this also a girl thing?
Sukuna didn't plan to scare his vessel to the point of crying. It makes him weirdly uncomfortable and, kind of, guilty. What a weird feeling. He sighs tiredly.
“Oi. I didn't intend to harm you, Brat. You just couldn't understand. That was the best way to show you.” Sukuna scowls. “So stop crying.” He adds grumpily but still strokes the boy's cheek lightly, and Yuuji starts sobbing with relief, his body finally relaxing. He sags into the bed under him. “Why are you crying even more now?” Sukuna asks, confused.
“I don't know.” Yuuji utters and grasps Sukuna's hand, ignoring an annoyed “oi” at that and nuzzling his head into it to Sukuna's utter shock, searching for comfort. “Don’t scare me like that.” He sobs.
Sukuna tries to pull his hand from Brat’s hold, but the boy needs something to ground himself and tugs with more strength. Sukuna is brought closer to his vessel in the process without warning and then enveloped in a hug, with Yuuji bringing his hands around Sukuna's neck, hiding his face there, and crying.
“Brat.” Sukuna starts, completely still under the touch, unsure what to do. “Oi, you are not supposed to hug your attacker like that.” He points, but his vessel squeezes tighter.
“Payback.” Brat mumbles, finally calming down slightly.
Sukuna sighs deeply. It is his fault that his vessel is in distress right now. Leaving him like that would be ill-mannered. He hesitates for a second, then takes Brat into his arms, shifting them so they both lay more comfortably, his vessel in Sukuna's embrace, sniffling from time to time.
“Did you understand why being with a man in close proximity is stupid now?” Sukuna scolds, and Brat nods obediently into his neck, so he snorts. “Look what you made me do.” Sukuna complains, but it's half-hearted.
When was the last time Sukuna felt someone's warm body against his? He doesn't recall. It's oddly comforting. Sukuna carefully brings his hand to brush Brat’s hair, now longer. His vessel makes a surprise sound and looks up from his hiding place. Sukuna snorts again at the sight.
“You look like a mess, Brat.” He murmurs and wipes the tears again, his vessel only gaping at him, astounded.
“It's weird when you are nice.” Brat mumbles, his eyes flickering between Sukuna's ones like searching for something.
Suddenly Sukuna realizes he has his vessel in a woman's body right in his arms, his breast shamelessly pressed to Sukuna's chest, arms around his neck, faces only inches apart, and Sukuna didn't even realize he placed his one arm around this godly waist, the other hand on the ass. Shit.
“Sukuna?” Brat asks, tilting his head, and those pink locks follow, tickling Sukuna on the face. His mouth goes dry, and he shoves his vessel away instantly. He's a man too, after all.
“I’m not nice, Brat.” Sukuna scoffs. “If you got the message, then I'm sending you back.” He decides, and before his vessel can respond, he does exactly as he said.
Then Sukuna sits up and groans into his hands. He shouldn't be affected this much. It's just Brat, for curses’ sake. He will get back to his old body soon. And it will be fine. Sukuna will forget the sensations and that this even happened.
Or at least that's what he repeats to himself, knowing it's all a lie. He won't forget. His imagination is giving him enough output after witnessing his vessel underneath him. The worst part is that he wouldn't mind Brat's usual body either.
Fuck.
In the meantime, Yuuji blinks back to reality, slightly confused at Sukuna's antics, but then the nagging urge to release himself hits him harder. He considers using the toilet, but peeing in this new body still terrifies him. The boy shakes his head and reaches for his phone, then thinks better of it, reminded of Sukuna's advice.
Yuuji takes a blanket and makes himself a living burrito. Better be careful. He doesn't want to feel so powerless ever again. Men are beasts, the boy decides, sniffling.
He hits the call button.