"Are you sure you want to do this..?" Izuku asked Katsuki in a rather timid and unsure voice.

They had just left the principal's office and were walking back toward the dorms. It was getting late, almost time to get dinner, but some students were still training or hanging out outside.

"What? Marking you?" Katsuki frowned as he looked at Izuku, realising he seemed nervous. He kept fidgeting with his clothes and biting his plump bottom lips, something that was greatly distracting Katsuki.

"Yes..." Izuku answered softly. "You know there is no turning back from it. I don't want you to feel forced to mark me only to help me..." The only thought of it was scaring him. What if Katsuki marked him and then regretted it? It was the last thing Izuku wanted.

"You know, I wouldn't have offered to mark you if I didn't fucking plan to do it already." Katsuki stated, his words true and final. "You have no damn idea since how long I want to bite your nape, nor how hard it was not to do it each time you were in heat."

Sinking his fangs into Izuku's scent glands, to make the omega his, had constantly been into Katsuki's mind. The urge had only grown stronger with time, and now that he could finally do it, Katsuki would let nothing prevent him from marking Izuku.

"Why didn't you do it..?" Izuku asked quietly. He had never known Katsuki wanted to mark him until today and the revelation was making him feel warm all over.

"I couldn't do it without even asking you if you wanted to be marked or not." Katsuki replied with a small grunt. Marking wasn't something you did without consent, and Izuku never was conscious of what was happening when in heat.

"Like you said, there is no damn turning back. Especially for you." Katsuki looked right into Izuku's emerald eyes as he spoke. "I should be the one asking you if you really want to do this." After all, alphas could mark an omega and still live without said omega, but omegas couldn't. Their body would never accept someone other than the one who had marked them ever again.

"Of course I want you to mark me." Izuku answered without any hesitation. He had already decided since long ago now that Katsuki would be the only alpha allowed to mark him. "But, if we do this, you know it means you'll always be with me. I don't care even if you get tired of me, I won't ever let you sleep with any other omega than me."

"I know." Katsuki smirked in response. He loved it when Izuku got territorial and possessive. He sure as hell didn't mind only being with Izuku for the rest of his life.

"Hey, look at what we have there... two students from class 1A." Someone interrupted them.

Katsuki and Izuku both looked in the direction of where the voice was coming from, their eyes landing on an alpha with blond slick hair and light purple irises. Izuku recognised him as one of the students of class 1B and wondered what he wanted from them. Other 1B students where standing not too far away, some looking over at what was happening.

Monoma grinned as he focused his attention on Izuku. "I heard you were an omega." He began, his words almost making Izuku flinch. It looked like words spread fast in UA. Class 1B apparently already knew about his second gender and Izuku didn't know if it was a good thing or not...

Monoma looked at Izuku up and down before scoffing. "I wonder how you made it into the hero course. I bet you didn't keep your legs closed, huh?"

"What the fuck did you just say?!" Katsuki immediately growled out in response. He was ready to explode Monoma's face, consequences be damned, but Izuku quickly stopped him. "Kacchan, don't. Let's ignore him."

Izuku had to stay calm and mature. He shouldn't react to such provocations, especially when him reacting was the thing Monoma wanted the most... but it didn't change the fact Izuku felt incredibly hurt. People always thought his body was the only good thing about him. He was constantly sexualised and was getting tired of it.

Monoma snorted. "I see you got the big angry alpha wrapped around your finger too. What? Do you give such good head he became obedient?"

Izuku finally had enough. "I do." He unexpectedly replied, his smile seductive as he confidently walked toward Monoma. "And if you want to know..." He began, before murmuring the end right into the alpha's ear:

"I even swallow."

"What?" Monoma only had the time to widen his eyes before Izuku suddenly grabbed him by the collar and violently tackled him to the ground. He then placed his foot onto Monoma's groin and put pressure, his face completely blank as he heard the scream of pain the alpha let out.

"Move and you can say goodbye to your dick." Izuku threatened. He was sick of people's irrespecutful behaviour toward him only because he was an omega. If the only way to earn other's respect was to be violent, he was going to do just this.

"You're pathetic. You're an alpha but you can't even do anything against an omega. I have no time to lose on someone as weak as you." He told Monoma with open disdain. Alphas who were all bark but no bite disgusted him. He then looked up and saw the other 1B students looking right at him, all of them watching the scene in disbelief.

"Yes, I'm an omega." Izuku spoke loud and clear so that everyone could hear him. "But believe me when I say I can beat all of you without even using half my power. You all better remember that." He menaced them, before finally removing his foot from Monoma's crotch and turning around.

"Let's go, Kacchan." He walked toward the dorms without looking back even once.

Katsuki smirked. Izuku was so hot when he got angry and Katsuki couldn't get enough of it. It was obvious he'd never stop wanting Izuku to be his for his whole life. After all, why would he want any other omega when he already had the baddest, prettiest and simply most perfect omega in the world?

"Next time you insult Deku, I'll fucking explode you myself." He told Monoma just before following Izuku to the dorms. "Except you won't get out of it alive with me." A sinister grin took over his features as the words left his lips.

Small chapter but next one should be longer!

Don't hesitate to tell me your thoughts or vote ;)