"Fuck, I hate this." Katsuki growled as he dragged Izuku to his room.

The alpha was literally burning up with rage. He couldn't even express how angry he was right now. He wished he could go back there and rip Sero's throat off; beat the dark haired alpha until nobody could recognise him anymore...

"Why the fuck did you have to kiss him?" He grunted as he harshly closed the door of his room behind him, locking Izuku and him alone inside together.

"What?" Izuku asked, his voice filled with incredulity. The omega had been letting Katsuki drag him without complaining until now but he couldn't believe what Katsuki had just said.

"You were the one that wasn't saying anything!" He suddenly retorted. "I was waiting for you to do something, but you never did!" He loudly exclaimed.

Izuku had been the one to have been hurt by Katsuki's lack of reaction. He had even felt betrayed by the alpha's behaviour. It had been the only reason he had then decided to kiss Sero, to get a reaction out of Katsuki.

"And you wouldn't have kissed him if I had told you so, maybe!?" Katsuki angrily replied.

The alpha had wanted to stop the kiss from happening so bad, really, but he had tried to restrain himself from doing so. He didn't have the right to tell Izuku what he could and couldn't do. Izuku didn't belong to him, they weren't together...

"Of course I wouldn't have kissed him if you had told me not to!" Izuku unexpectedly exclaimed. "I wanted you to tell me not to kiss anyone if it wasn't you!" He declared, what he just confessed completely silencing Katsuki all of a sudden.

Katsuki couldn't believe what he had just heard. He stared at Izuku in silence, his heart beating incredibly fast inside his chest. "Fuck..." He could only breath before suddenly taking Izuku's face into his hands and slamming their lips together.

Izuku wasn't expecting the sudden kiss but he still instantly melted into Katsuki's touch, his emerald eyes closing as he wrapped his arms around the alpha neck. He kissed back Katsuki with as much passion, their lips moving against each other and perfectly fitting together.

"Don't ever kiss someone other than me again." Katsuki told Izuku once they parted lips, their eyes boring into each other.

Izuku was breathless. The kiss they had just shared had been absolutely mind-blowing. It had been short but hot and simply perfect. It had been everything Izuku had ever imagined kissing Katsuki would be like.

The omega gazed into Katsuki's captivating crimson eyes, his own emerald eyes shining with swirling emotions as they intensely stared at each other. "I won't." He simply answered in a soft murmur. He would do anything Katsuki wanted, because no-one else mattered more than the blond alpha to him.

Katsuki could see just how deep Izuku's devotion was inside the omega's two green pools and he felt his heart pound in response. Izuku was so perfect and beautiful that Katsuki couldn't help wanting to keep him all to himself.

The alpha cursed under his breath, a low grunt escaping his lips. "I'm trying not to be possessive as hell over you, I really am, but it's not fucking working at all." He frustratedly growled.

He wouldn't let anyone approach Izuku at all if he listened to his instincts. But when he tried to ignore them, like he had done when Sero had to kiss Izuku, he suddenly exploded in a fit of rage and uncontrollable possessiveness.

Katsuki didn't know what to do. He didn't want to force Izuku not to do certain things because of his overwhelming jealousy. He didn't want to try and control what the omega did. It wouldn't be fair on Izuku, not when they weren't even in a relationship...

"It's okay." Izuku unexpectedly quietly said. "You can be possessive over me. I don't mind." The omega told Katsuki in a voice filled with honesty.

Actually, if he was being even more honest, he even liked the fact Katsuki was possessive over him. He wanted the alpha to be. It always made him feel good whenever Katsuki showed how proprietorial and jealous he was over him.

Katsuki silently stared at Izuku some instant before suddenly pressing their lips together again. "Why are you so damn perfect?" He murmured against the omega's plump lips.

He couldn't believe how perfect everything about Izuku was. Even the taste of his lips was.

Katsuki moved his hands under Izuku's ass and suddenly picked the omega up. He started to walk toward the bed, their lips never parting even once as he did. He laid Izuku on the bed and followed suit, his imposing frame caging the tiny omega against the mattress.

All the while Izuku quietly moaned into the kiss they were sharing. Like moments ago, it was nothing deep. There was no tongue involved, but they were discovering each other's lips for the first time and it was enough to make their heart race.

"Kacchan..." Izuku quietly called out when they parted lips once again. The omega still had his arms wrapped around the alpha's neck, their body pressed together as they bored into each other's eyes.

Katsuki let out a low grunt as he buried his face into Izuku's neck. Izuku was so pretty he was afraid he would lose control and do something he shouldn't do. He couldn't help it when Izuku was literally the definition of beauty and adorableness. No wonder nobody could keep their eyes away from the cute omega...

"Soy sauce face is into you." Katsuki suddenly blurted out with a growl. He still hadn't completely calmed down from what had happened back at the common room. He still couldn't get over the fact Sero had dared kiss Izuku, and in front of his own damn eyes on top of that.

"He's not. He was just playing the game..." Izuku tried to say but Katsuki wouldn't hear any of it.

"He fucking is." The alpha angrily replied. "And shitty hair, too." He unexpectedly added.

Katsuki hadn't forgotten the seductive tone Kirishima had used with Izuku. He hadn't missed the way the redhead would look at Izuku like he was a whole course meal either, lust and hunger shining inside his red eyes...

Actually, Kirishima wasn't the only one to look at Izuku like that. Almost all the alphas of the class were, even some betas like Kaminari... it was fucking infuriating to see.

"All these bastards are after your sexy ass." Katsuki furiously growled.

Izuku blushed at Katsuki's words, but the omega quickly ignored his embarrassment to try and calm Katsuki down. He knew how angry the alpha could become and how fast it could arrive. Katsuki had always been having anger issues since he was a child. The only difference was now they weren't directed toward Izuku anymore, but instead toward anyone who was going too close to the omega...

"They're not." Izuku assured Katsuki. People maybe found him cute but it didn't mean they were after him... did it?

"You don't fucking see how they look at you, Deku." Katsuki immediately retorted. "They maybe don't know you're an omega but they can feel it deep in their instincts. Alphas are naturally drawn to omegas." He explained.

"It doesn't mean they'll do anything..." Izuku tried to convince Katsuki but as always the alpha wouldn't even listen.

"It does. And I don't fucking trust this half-n-half bastard either." He stated. "I'm sure he'll try something with you now that he knows you're an omega."

Izuku had enough. "Stop it, Kacchan." He suddenly said. "It doesn't matter if they're into me, because I'm not interested in any of them." The omega firmly declared.

And it was the truth. They could try anything they wanted, flirt with him as much as they wished, it wouldn't change anything. Izuku wasn't interested in them. Actually, the omega wasn't interested in anyone at all...

Anyone that wasn't Katsuki, that is.

Katsuki smirked as he looked at Izuku. What the omega had just said was what the alpha had wanted to hear. He couldn't help but grin as he took Izuku's face into his hands and leaned in to kiss the omega again.

"You better not be." He said just before claiming Izuku's irresistible lips.