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Gojo is a prime alpha, one of the rarest type, and only the chosen or 'gifted' people are born with it. Being a prime alpha is an honor since every senses that you have are much heightened than an average alpha's.
But it also has its cons.
Being a prime means being much, much stronger, it also affects the rut cycle and the intense performance level during sexual intercourse.
Gojo, of course, had to get locked up every time he ruts, away from everyone. Especially his favorite, Yuuji.
It's not necessary, of course, since Yuuji is just your average beta that is unable to get affected nor produce even the tiniest bit of pheromones. But why isn't he allowed to check on Gojo like the other betas?
Yuuji, of course, has gotten curious on that. The betas are mostly the ones that are responsible for giving Gojo his meals in his room, but he isn't assigned to a single job. Does Gojo hates him perhaps?
No, that wasn't the case. His sensei could never, especially on how sweet he is towards him.
So, he planned an intrusion. The room only opens from the outside, the only thing he needs is an I.D. from one of the staffs, or his friends. The staffroom is definitely well-guarded, so it'll be difficult to retrieve a single card, so his only choice is to either steal Kugisaki's, or Fushiguro's I.D.
He's lucky that his and Fushiguro's dorms are nearby, so he sneaked his way out, careful not to make too much creaking sound when opening the door.
He finally gotten inside his room, and he noticed that Fushiguro is fast asleep, slightly snoring. He lightly snorted at the noises, before grabbing his I.D. that is hanged just on his bed-post.
Yuuji was about to get out, before a hand caged him between the door. Unable to open it, he gulped, and slowly turned around, already accepting a whooping from his friend.
When he finally looked at him, Fushiguro still has his eyes closed, and his body still.
Sleepwalking.
Yuuji released a breath of relief, helping his friend back to his bed, and pulling his sheets over him, before going back at the doorway, and closing it gently.
He walked through the dim hallway; The moon provides his only light source, as he made his way to a certain door.
It was huge, antique, but it was no ordinary door. He gulped, rethinking his choices.
He just wanted to see how his sensei is doing, and he wanted to know why he's the only one that's forbidden to go in, aside from the other omegas.
Glancing at the wooden door, he released a final puff of breath, before tapping the I.D. on the scanner, and letting the doors open itself.
Yuuji was greeted with yet again another door, probably to prevent Gojo from going out.
He took another step inside, before the front doors close shut in a weird way.
Now facing the doors that will reveal what's inside, he had gotten more nervous. What if Gojo does not want him there? What if he really hated him?
None of his thoughts matters, only his sensei's sweet and reassuring smile appeared on his mind.
"I'll help you, sensei..."
With those words, he tapped the I.D. once more, and the doors slides open, revealing a huge dark room. Yuuji took a step inside, and he finally noticed how everything is a mess; Broken and shattered.
The inner doors closed shut, and has imprints of scratch marks, the sofa was out of place, and completely teared in different parts. It is as if somebody fought in here.
The thought scared him, concerned for his sensei that he must've gotten hurt during his rut.
"Gojo-sensei?! It's me, Yuuji! I've come to chec-"
His words were stopped mid-sentence, when the atmosphere suddenly dropped around him. The pressure surged through his body; It felt almost like a punch to the gut, but in the weirdest way.
He gasped, clenching his stomach before he collapsed to the ground.
W-what is this...?
The feeling was very... foreign to him. It's like being pulled down by gravity, but there is this weird sensation that he's feeling, something churning and twisting...
...almost as if it was morphing.
He cried out to his sensei, calling him in hopes to ease the pain by seeing his face. His sensei always knew what to do to make him feel better, and he needs his presence right now.
As if his prayers were heard, a pair of blue eyes emerges from the dark, glowing like gems under the moonlight. It moves closer, and closer, until those pair of eyes were completely staring at Yuuji.
He recognizes those eyes, the eyes of the strongest sorcerer. The eyes of his precious sensei.
Although right now, those eyes seems to give off a different feeling. A dangerous, gut-wrenching feeling that of a predator-like stare.
It moved lower, closer to his, and slowly revealed a pale-handsome face.
"S-sensei?" Yuuji gasped, using his last bit of strength to touch his face. Oh how bad that choice was, since Gojo released a deep growl, before picking him off the bed, and carrying him towards his bed.
Yuuji gasped, he was being carried like a sack on his shoulders, which puts more pressure on his stomach. He tried to protest, but he was completely thrown to the bed, and his arms both pinned by one strong hand.
"Gojo-sensei..! What has gotten into y-"
"Yuuji."
His body completely went in shock, almost similar to a statue.
It was the first time that Gojo used a command at him with that alpha tone that is mostly used for omegas to obey.
But he's not an omega, so why can't he move his body?
He wasn't even given a chance to breath, before a tongue licks its way on his neck.
Yuuji jumped at the action. His instincts suddenly told him to run, yet his body could never, not if he was being caged by a prime alpha.
The tongue kept lapping on his neck, leaving a trail of marks on his slightly tan skin. Yuuji can't help but to mewl in the process, I mean, who wouldn't when a hot slimy tongue kept lapping his entire neck.
It wasn't long before Gojo's other hand completely tore off his hoodie, revealing his pink plump nipples that were inverted, and are ready to pop out. Gojo took interest at the cute bud, so he latches his mouth, completely sucking on it.
"Oh..!"
Yuuji gasped. He glanced down at the sight of his sensei sucking his nipples like a hungry starved man.
"P-please stop...ngh...!"
His cries were left unheard, as Gojo uses his tongue to pull the nipples out, and transferring to the other to do the same gesture.
It went on for a couple of minutes, only the torturous feeling of being stimulated in the nipples, while both of their hard-ons pressed with each other.
"Sensei... I'm n-not an omega..."
Yuuji gasped between breaths, causing for Gojo to stop with his actions. He pulled his tongue away from the smaller boy's nipple, only to look at him face to face.
"Maybe you aren't..."
Yuuji didn't knew why, but he was saddened at his words. He attempted to push him off with his legs, since his hands are still pinned up.
"Y-yes so... I think you should sto-"
He was immediately naked in a second, his clothes flying everywhere, as his body was immediately spun. His face hitting the sheets beneath him, while the cold air hits his bare ass that was exposed only for his sensei.
"You aren't an omega... But I could fuck you like one."
Gojo licked his lips in a hungry manner, as if there's a meal just prepared in front of him.
Yuuji blushed at his words, not just that, but also because his backside was exposed to his sensei.
He wonders, if he could ever help him with this since he's not an omega, and he is unable to produce slick for him.
His thoughts got erased when he felt calloused hands traced along his back, while the other grips his waist that left crescent marks on the side.
It gave him shivers that travels down his spine. His sensei's hands feels cold, and the way it caress his skin gave him goosebumps.
Gojo's fingers travels down his backline, down his plump cheeks before spreading them out, revealing his puckered hole that made the older man smile in delight.
Yuuji is completely embarrassed being so exposed, not until he felt Gojo shifting and leaning his face down to give his entrance a kiss.
The pink-haired shuddered and tried to protest, but Gojo's hands remains firm and unmoving, as he continues to lap the delicate flesh around his rim.
"Sensei..mngh..!"
Yuuji's moans just urged him to lick faster, deeper, on which he completely inserts his tongue inside his warm cave.
Gojo was confused at first when he tasted something sweet coming from Yuuji, since omegas are the only ones that can produce slick. But he was too preoccupied of ravishing the shorter man in front of him, that he continues teasing his poor hole while clenching the plump butt, leaving a red marks around the area.
Yuuji tries to hide his moans by burying his face on the pillow. It was a new sensation for him. Weird at first, but the sudden pleasure frightened him, but he couldn't help but be excited.
"S-something..something is gonna-"
Before he could continue his words, The man completely pulled out his tongue which made Yuuji whine in disappointment. He felt empty, and his insides starts to feel itchy.
He then felt the bed creak as two large hands caged him from both sides, the same time he felt something prodding his hole.
He can feel his sensei's breath travel along his neck, kissing and lapping on it like a starved man.
"Gonna fuck you so good... you'll be screaming my name.. hah..."
Yuuji felt his cheeks heat up, before the air in his lungs was completely pushed out by a sudden thrust.
His eyes were wide, as he clings on the pillow below him. His mouth is formed in a silent 'O', while his body convulses at the sudden intrusion.
What was that?
He wondered. His body was too surprised to react, until the deep chuckle of his sensei completely shook him out of his thoughts.
"My Yuuji, your reaction is cute just now." He grinned, before biting the shell of his ear. "I'll make sure to ruin you more."
Before Yuuji was about to respond, his hips starts to thrust deeply inside of him, not giving the smaller man the time to adjust.
He kept digging out the moans out from Yuuji's mouth, as if he wants him to scream louder.
He does.
So he grabs his pink hair, pulling his head back to force Yuuji to reveal his moans that he craves so much.
"W-wait, sensei...oh g-god!"
The bliss that Gojo felt because of those little 'ah's' and 'oh's' that he kept emitting was satisfying to his ears, especially the sight of his back arching and the way his buttocks turn a cute shade of pink whenever his hips smacks back at him. Maybe he'll let Yuuji sit on his face, but that'll be reserved for the next time.
He continues to thrust his cock in a manner, on which it completely hits the deepest parts of Yuuji. That certain spot where it made him roll his eyes and turn his knuckles white from clenching the sheets too much.
The younger man came first, the feeling is too much for him that he completely bursts the second time Gojo hits his special spot. His body convulses, but his sensei continues his onslaught.
His legs are completely shaking, that he started to beg desperately.
"Sensei- s-stop I just..ahn! came..!"
But his words were ignored, as the taller man pulls his arm and switches his position where he can see his face.
Yuuji looks completely fucked out, and he's not even done with him yet.
"We're not stopping until I completely breed you..."
"I'm not an omega..." He whined out, but the other ignores his words and licks his neck.
"You are my omega, and you'll take my dick like one."
Gojo grips his hips once more, before continuing to thrust back inside him.
Yuuji tossed his head back, his tears starts to flow down his cheeks, and a sudden burning feeling emerges from his stomach. He scrunched his face, concerned and confused on why his body starts to heat up.
Gojo completely noticed it, completely stopping his actions to sniff the unfamiliar yet sweet scent that wafts through the air. Yuuji was confused at his sudden actions, before his eyes widen as he smelled a cool minty scent coming from the white-haired.
They both locked eyes, completely aware of the situation.
Yuuji is turning into an omega.
It brought a grin to Gojo's face, as he raised both Yuuji's legs on his shoulders, completely folding his body into a mating press.
"S-sensei? Wha-"
"I'll fill you up, my little omega."
With that, his cock was buried deep that a small bump can be felt through his tummy.
Yuuji's hands grip his back that it left scratch marks that only adds up to his pleasure.
Maybe Gojo is indeed a masochist.
"Sensei...sense-"
"Satoru. Scream my name, Yuuji."
Yuuji was conflicted, but his voice was knocked off from his throat by another jab of the large manhood inside of him.
"S-Satoru!"
"Good omega...."
The praise bubbled a warm feeling inside of Yuuji, that he almost forgot that the man is completely breeding him as he felt his length grow bigger.
Yuuji tried to push him away, but his sensei kept fucking him through it that he can only release gasps as his hands weakens and was sprawled to the side.
Gojo leans closer to kiss his lips hungrily, before quickening his pace and ramming deep thrusts inside the younger male's newly formed womb.
"Take it like a good boy, Yuuji."
With a grunt, he buries his knot inside him, sealing the entrance while his warm liquid fills Yuuji completely to the brim, at the same time he buried his fangs in his neck, completely claiming the pink-haired. The smaller male also came on both of their stomach from his sudden action, some hitting their chins while his eyes rolled back from the overstimulation.
Gojo licks the blood from his neck, and leans away to adore the sight of his fucked out omega, completely shaking in pleasure as the tip of his cock is red for cumming for the second time.
He chuckled, his hands roaming the male's chest before squeezing it lightly, making him whine once more.
"We're not done yet, omega."