Izuku slightly shifted in his sleep as a soft hum slipped past his pink lips. The omega began to wake up, his emerald eyes slowly fluttering open. His mind was still groggy when he cutely rubbed his eyes, an adorable yawn escaping his mouth.

"You're awake?" Someone asked and the sound of the low deep voice sent shivers of delight down Izuku's spine.

"Kacchan..." Izuku called as he turned around in the bed to face Katsuki. It looked like they were in Katsuki's dorm room and, if the weak amount of light coming from behind the curtains was any indication, it had to be early morning.

"How are you feeling?" Katsuki asked as he gently reached out a hand to move one green lock out of Izuku's face. His voice was still raspy from sleep and Izuku thought it was the sexiest thing he had ever heard. He wouldn't mind hearing it every morning.

But then Izuku realised he didn't remember going to bed with Katsuki yesterday night. Actually, the whole evening was kind of a blur in his mind. The only thing Izuku remembered was playing video games with Kirishima and Kaminari, before everything went black...

"Did I go into heat?" The omega suddenly asked, his voice wavering and his heart starting to race inside his chest. The only reason he wouldn't remember something was if he had gone into heat. He prayed he was wrong but he knew that definitely wasn't likely.

"Yeah." Katsuki answered Izuku's fear. "Right in fucking front of dunce face and shitty hair." He added, his words causing Izuku's heart to momentarily stop.

"T-they saw me?" The omega asked in a trembling voice. It couldn't be. Going into heat right in front of his classmates was his worst fear. It was way worse than Todoroki discovering he was an omega because of the scent of his slick. "D-do they know..?"

"Yes..." Katsuki answered again and Izuku suddenly felt like he couldn't breath properly anymore. His emerald eyes widened in fear and panic, his heart beating dangerously fast inside his chest.

"Hey, it's okay." Katsuki immediately reassured Izuku. He could recognise what a panic attack looked like and, although it had been some times since it had happened last, he knew Izuku could have one of these. "I took care of it, don't worry." He assured as he pulled Izuku into his embrace, placing the tiny omega on top of him and releasing soothing pheromones to calm him down.

"You took care of it? W-what did you..." Izuku stammered, his fear turning one for Kirishima and Kaminari's lives.

"I didn't kill them, if that's what you're asking." Katsuki snorted. "I only threatened them a little..." He explained, a devilish smirk taking over his handsome features as he told Izuku what he had done.

Izuku couldn't help but let out a little giggle at this. Of course Katsuki would have threatened them. It was so like him.

"Thank you, Kacchan." The omega softly murmured, his panic long forgotten as he now laid in the comfort of Katsuki's arms. As long as he had Katsuki with him, he was safe. That's what he believed and what he would always feel. "I don't know what I'd do without you..."

"It's nothing, Deku." Katsuki answered with a softness few would think possible coming from the blond alpha. But, with Izuku, Katsuki couldn't help but be gentle. It was a side of him only Izuku had the privilege to see.

With the position they were in, Izuku laying on top of Katsuki's chest, they could both perfectly look into each other eyes. They silently stared at each other, their gazes wavering to the other's lips, until Katsuki finally moved his large hand behind Izuku's head and pressed their lips together.

Izuku instantly melted into the kiss as he closed his emerald eyes. He hummed in pure bliss, his heart suddenly fluttering inside his chest when he felt Katsuki's tongue lick against his lips. The omega tentatively opened his mouth, letting Katsuki deepen their kiss for the first time. Until then, they had never gone further than closed-mouth kisses.

They kissed, slow and gentle. They took the time to discover each other mouthes, their tongues languorously dancing together. It felt amazing and simply perfect. Izuku could feel butterflies inside his belly. When they finally came up for air, there was a small string of saliva still connecting their parted lips.

Izuku couldn't help but blush at the sight. He quickly hid his face into Katsuki's neck as his cheeks became a dark pink, the adorable reaction making Katsuki laugh. "You're cute, Deku." The alpha blurted out in a deep chuckle.

"Stop it..." Izuku whined in response. It was only natural he was feeling shy. It had been his first real kiss, after all.

Katsuki amusingly smiled as he gently combed Izuku's soft green hair with his hand. He let Izuku hide against his chest, appreciating the sensation of the omega's body tightly pressed against his. A comfortable silence took over the room as they simply enjoyed cuddling together.

"The hickey I gave you is starting to fade..." Izuku eventually murmured. The dark red mark he had put on Katsuki's neck when they had played truth or dare was now only a light pink. It would surely completely disappear in only a few days.

"You can just redo it." Katsuki answered.

"I can?" Izuku finally looked up at Katsuki as he asked, his beautiful emerald eyes almost sparkling at the idea of giving Katsuki another hickey.

Katsuki smirked. "Yeah, of course." The alpha easily responded. Why would he say no to this? If Izuku wanted to mark his territory, he couldn't be more pleased.

Izuku only hesitated a little before delicately pressing his lips where the former mark was fading. He gently kissed and sucked on Katsuki's skin, until a dark hickey appeared on the alpha's neck. He then tentatively looked up into Katsuki's crimson eyes, a soft blush covering his cheeks.

"Good boy." Katsuki praised, his words triggering a timid but satisfied smile out of Izuku.

"We should probably get dressed..." The omega eventually murmured. They couldn't stay in bed all morning. They needed to get ready before having breakfast.

"Yeah." Katsuki replied and Izuku got out of bed, the omega reluctantly leaving the comfort of Katsuki's arms. But when he stood up, he suddenly realised that the only thing he was currently wearing was a white shirt, somehow looking oversize on him but barely reaching his mid-thighs. Moreover, Izuku could perfectly smell Katsuki's scent all over the fabric.

"Why am I wearing your shirt?" He asked Katsuki with a flustered blush.

Katsuki amusingly smirked as he looked at Izuku. He had to confess seeing the omega in his shirt, with absolutely nothing else underneath, was a pleasing sight. "I had to carry you out of Kaminari's room but your clothes smelt like sex." He bluntly answered.

Izuku's emerald eyes went wide at the information. "We did things in Kaminari's room?!" The omega exclaimed in shock.

"Yeah." Katsuki shamelessly replied and Izuku couldn't believe it. "Oh god..." He murmured, feeling incredibly embarrassed and even mortified. How could he possibly look Kaminari in the eyes after knowing this?

"Don't sweat it, Deku. I'm sure the idiot will happily jerk off to the scent of your slick left on his sheets."

"Kacchan..!" Izuku's whole face immediately turned a deep red at Katsuki's words. The only thought of someone jerking off to the scent of his slick made him want to die from embarrassment. He didn't even want to imagine it.

"I-I'm going to take a shower." He suddenly said as he really needed to do something to forget everything he had just heard.

"I already cleaned you up yesterday." Katsuki informed and Izuku blushed even more at the thought of Katsuki cleaning his body.

"W-well, I'm gonna get dressed..." The omega stammered before quickly disappearing into the bathroom linked with the room, closing the door behind him.

Katsuki couldn't help but laugh at Izuku's reaction. He loved teasing the omega. It was so adorable how quickly he could get him flustered. "No need to go to the bathroom to get changed, Deku. I already saw everything..."

He smirked as he heard Izuku's flustered whine from behind the bathroom's door.

It was kind of a filler chapter but I hope you still enjoyed it!