"It can't be..." Sero's eyes widened in shock as arousing pheromones suddenly began to fill up the air. The sweet scent rapidly spread in the changing rooms, completely filling up the entire atmosphere in no time.

Sero instantly felt his knees grow weak as intense desire swelled inside him at the irresistible scent. He was only a simple alpha so Izuku's pheromones immediately drove him crazy. He had never smelt anything more delicious before.

"Alpha..." Izuku let out a small whimper and Sero swore no sound could possibly turn him on more. The alpha couldn't remain standing anymore. He sat against the wall, his eyes wide and his breathing getting heavier as his instincts went insane.

"You're an omega?" He breathlessly said, shock and disbelief filling his voice. It was true Izuku was incredibly pretty and sexy, but not once Sero had thought about the possibility of Izuku being an omega. It just didn't cross his mind at all. After all, how could an omega be in the heroic course?

But the proof was now right in front of his eyes. Izuku's arousing pheromones couldn't possibly be mistaken for something else. "You're in heat?" Sero cursed under his breath as he really realised the situation he was in. It was no wonders Izuku had desperately told him to leave. The omega hadn't wanted to go into heat with an alpha right next to him...

However, Izuku didn't seem this upset about Sero's presence anymore.

"Help me..." The omega mewled as he sensually crawled toward Sero, his words completely taking the dark haired alpha aback.

"You want me to help you? Really?" Sero couldn't believe his ears. He had been interested in Izuku since day one. He liked everything about the green haired boy. He had never found someone this beautiful and attractive before. Somehow, knowing Izuku was actually an omega didn't put him off at all. If anything, it was more of the contrary...

After all, omegas were made to be with alphas.

"Yes, it hurts..." Izuku whined and Sero understood that the amount of pain Izuku had suddenly been in was because of his heat. It reassured Sero since he had thought it had something to do with Izuku's injury.

"Come here." Sero pulled Izuku on his lap, wrapping his arms around the omega's slim waist at the same time. Since he was an alpha, taking care of an omega in heat was instinctive for him. He just couldn't fight it, even less when the omega in question was one as gorgeous and sexy as Izuku.

"You smell so good." He breathed out as he inhaled Izuku's irresistible scent. The arousing pheromones were making his blood pulse inside his veins. It was making him hot and causing his cock to harden inside his pants.

"Alpha..." Izuku moaned as he began to slowly rub his ass against Sero's erection, the sweet friction triggering a low groan out of the dark haired alpha. Izuku's beautiful emerald eyes looked unfocused and filled with lust. His face was adorably flushed and his lips were half-parted, sensual whimpers leaving them.

"You're completely out of it, huh?" Sero grunted, realising Izuku wasn't his usual self. The omega seemed like a totally different person, one that was driven by desire. He surely only was acting like he currently was because of his heat...

Izuku whimpered when Sero didn't touch him like he wanted to be touched. His entire body was burning up but the alpha he was with wasn't doing anything to make him feel better. Izuku didn't understand why. "Help me..." He mewled as he processed to rub harder against Sero's erection, searching for any kind of release.

Sero groaned in pleasure at the action. "I don't think we should do this." He said as he thrusted his hips to meet Izuku's ass, his action contradicting his words. He was desperately trying to resist his instincts but unable to do so. It was so hard to think straight when the most beautiful person he had ever laid eyes on was sensually undulating on top of him.

"Please, need you..." Izuku pleaded in the sexiest tone ever. "Hurts so much, alpha..." He whimpered as he seductively licked Sero's lips, the action completely destroying any control the dark haired alpha still had.

Sero let his instincts take over him.

He suddenly pushed Izuku on the floor and placed himself on top of the tiny omega, his lips brutally crashing with Izuku's. He plunged his tongue inside Izuku's mouth and roughly grabbed the omega's hips to grind against him.

Izuku loudly moaned in response. Slick kept pouring out of his entrance as his heat got stronger, the scent of his arousal enhancing in the air.

Sero smelt it and couldn't restrain a low growl at the divine scent. He stopped kissing Izuku to instead focus on the omega's state, his eyes landing on the wet spot on Izuku's hero costume where the omega's hole was situated.

"God, you're so wet." He grunted at the sight. Nothing could turn an alpha on more than seeing an omega dripping wet for them. Sero was so aroused right now that the only thing he could think about was to see Izuku naked and covered with slick. He suddenly flipped the omega on his stomach to have access to his hero costume's zipper, before zipping it all the way down and finally revealing Izuku's perfect ass.

"So sexy..." Sero breathlessly murmured. Slick was dripping down Izuku's ass and it was the sexiest thing he had ever seen. He firmly grabbed the omega's ass cheeks in his hands and spread them apart, his cock pulsing at the sight of Izuku's pink twitching entrance.

"Damn..." He licked his lips, feeling the sudden urge to taste Izuku's slick.

"Ngh!" Izuku loudly moaned when he felt a warm tongue suddenly lick his hole. He arched his back in response and elevated his ass in the air, wanting to feel more of the pleasure he was being given. "Alpha..!" He called out in bliss as Sero began to eat him out.

Sero had never given a rim job to someone before, but Izuku's slick tasted so sweet he didn't need any more motivation to enter his tongue inside the omega. He enjoyed the way Izuku quivered in response and revelled in the adorable moans the omega was letting out as he pleasured him, humming in satisfaction.

"Mwnh..!" Izuku couldn't stop shuddering in delight. His hips moved on their own and slick kept pouring out of him. It felt so good, even amazing, but it still wasn't enough to make him come. "More..!" He asked between moans as he needed more stimulation to be completely satisfied.

Sero didn't need to be asked twice. He stopped eating Izuku out and instead processed to zip open his pants, finally taking his throbbing cock out of its restraints. "I'll give you more." He husked out as he stroked his length a few times, using his precum as lubricant.

Izuku was in the perfect position of submission: ass on the air, back perfectly arched up and face pressed against the floor. Sero couldn't possibly resist taking the omega right then and here. He used one hand to grab Izuku's hips and used his other hand to guide his cock toward the omega's hole, unable to hold back anymore.

But, as he was just about to push in, his face was suddenly met with a brutal explosion that violently propelled him at the other side of the changing room.

"Don't you fucking touch MY omega!!!" Katsuki furiously shouted.