"A-alpha..!" Izuku moaned loudly as Katsuki kept fingering him, his whole body trembling in pleasure and tears rolling down his cheeks at the divine sensation.

"You're close?" Katsuki murmured huskily right into Izuku's ear. They were laying on his bed, Katsuki's muscular chest against the omega's back as he thrusted his fingers in and out of Izuku's tight channel. Wet sounds were resonating in the room as well as the adorable whimpers Izuku kept letting out, driving Katsuki insane with arousal. He could tell Izuku was getting close to climax by the way the omega quivered in his embrace.

"Mwh, y-yes..!" Izuku answered between lewd mewls. Holding Katsuki's arm that was resting behind his head tightly, he brought the alpha's hand to his mouth and decided to suck on the digits sensually.

"You're so fucking cute." Katsuki couldn't resist growling. He was trying not to do more than just finger Izuku, but the way the omega was acting when in heat was so tantalising it was making it hard to keep control. "You can come whenever you want, kitten." He ignored his primal urges and instead gently bit Izuku's earlobe as he firmly pressed his fingers against the omega's prostate.

It was enough to drive Izuku over the edge. "Alpha! Nghh!" The omega let out a loud moan as he came, biting down Katsuki's fingers in reflex and trembling into his alpha's embrace. Milky cum spurted out on his belly and the sheets, slick oozing out of his entrance and leaking down his thighs in response.

"Good boy." Katsuki murmured when Izuku slowly removed his teeth from around his fingers. Small drops of blood could be seen where the omega had bitten him but it was nothing Katsuki had to worry about. He cautiously pulled his fingers out of Izuku's hole and made the omega rest on his back, before pressing a loving kiss on Izuku's forehead.

As usual, Izuku was half passed out after his orgasm, so Katsuki used the opportunity to go to the bathroom. He washed his hands and willed his erection to disappear, his cock pulsing inside his boxers. He would have loved to fuck Izuku senseless but now wasn't the time. With Izuku risking to be expelled, sex was the last thing on Katsuki's mind.

"K-kacchan..?" Katsuki heard Izuku call his name from the bedroom as he proceeded to wet a washcloth with warm water. "I'm here, kitten." He answered before turning the water off and joining Izuku. "Let me clean you up."

"O-oh..." Izuku slightly blushed as he noticed the cum and slick on his body. His mind was still a little cloudy from his heat and so it took him some time to put two and two together. "I was in heat?"

"Yes." Katsuki simply answered while he used the wet washcloth to clean Izuku's belly.

"What happened?" The omega asked again but, this time, Katsuki completely ignored his question. "Turn around." The alpha instead instructed, wanting to clean the slick from Izuku's thighs and entrance.

"I-I can do this myself." Izuku timidly stammered. Even so he loved when Katsuki was taking care of him after sex, it still was slightly embarrassing. "It's okay, let me do it." But Katsuki assured and so Izuku shyly rolled onto his stomach, letting Katsuki clean him up with the wet washcloth.

"You okay?" Katsuki asked once he was over. He carelessly threw the washcloth in the bathroom and laid with Izuku on the bed, the omega's head comfortably resting on his chest.

"Yes, just tired..." Izuku answered as he snuggled into Katsuki's strong arms. He always felt exhausted after going into heat. Not remembering what had happened was even more tiring since it made him feel like he had slept for a very long time. But even as he enjoyed cuddling with his alpha, Izuku had only one thing in mind.

"Kacchan..." He called out in a whisper, his voice sounding slightly unsure and fearful. "What happened?"

That was the question Katsuki didn't want to answer. He knew that as soon he would tell Izuku, the omega would completely break down. But he also knew he couldn't possibly hide this from Izuku...

"Aizawa saw you."

These three words instantly caused Izuku's heart to stop to beat. "W-what?" The omega stammered, his stomach painfully clenching as he looked at Katsuki with wide emerald eyes.

"They know. We have to go to the principal office." Katsuki silently added and Izuku's whole world suddenly fell apart.

"You're lying..." His first reflex was not to believe it. Surely, Katsuki was lying. It couldn't be possible. There was no way his dream was going to end there...

"I'm not. I'm sorry." But Katsuki apologised and Izuku immediately knew he was saying the truth. There was no way Katsuki would say he was sorry if it wasn't the case. Tears instinctively welled up into his emerald eyes in response, utter anguish swelling inside him as he saw everything he had worked for suddenly turn to ashes.

All his efforts were for nothing. He would never be a hero.

"Fuck, don't cry." Katsuki cursed under his breath at the sight of Izuku's tears rolling down his freckled cheeks. "Deku, look at me." He cupped Izuku's face into his hands and looked right into his emerald eyes, using his thumbs to gently wipe the tears away. "Please, don't cry. It's gonna be okay."

"I-it's not gonna be okay..." Izuku hiccuped in answer. "I-I'm gonna get expelled, Kacchan..!" He broke into tears, his whole body trembling with his sobs in Katsuki's arms. He felt like his entire life was crumbling and there was nothing he could do about it.

"You won't. I fucking swear I won't let them do this." Katsuki assured as he tried to comfort Izuku the best he could. He hated seeing his omega cry. It was physically hurting him. Each of Izuku's sobs was breaking his heart.

"B-but what can you do?" Izuku questioned between miserable sniffles. "I-I lied to them about my second gender and t-tricked them... t-they're gonna be so mad..."

"But they can't expel you." Katsuki replied firmly. "You're one of their best students. They would be fucking stupid to let go of you only because you're an omega." He said in a low growl.

Katsuki would explode anyone that would tell Izuku he couldn't be a hero. The omega had worked so hard to be where he was now, probably more than anyone else. He had trained during so many hours in order to control his quirk and to reach the level he had today, he had pushed his body to its limits so many times...

It would be so unfair if he couldn't achieve his dream despite all of his efforts.

"Y-you really think they won't..?" Izuku hiccuped as he looked at Katsuki with big teary eyes filled with hope. He let out a soft hum when Katsuki gently kissed his tears away, closing his emerald eyes and nuzzling his alpha's warm palm.

"I'm sure." Katsuki answered. He wouldn't let anyone hurt Izuku, physically or mentally. He would always be here for his omega...

Whatever happens.

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