Chapter 1 – Submission Hold

Katsuki eyed Kirishima's red hair in front of him in annoyance. He had been looking for a new sport to let out his energy on and his friend had promised he'd found an interesting place and dragged him there straight after work.

It wasn't hard for his one and only friend to do so since he was a bartender at the same bar Katsuki was a bouncer for. He was skeptical that the gym would actually be open this late at night but the neon sign was lit up as they approached the front of the building.

Plus Ultra Training the blinking sign read.

It had a corny name, but the idea of being able to take out his frustration on a living human had his interest peaked. What he didn't expect was the rush of Alpha pheromones the moment he stepped in the door. The place had looked quiet from the outside but once inside he realized they had just walked into a heated sparring match.

"Good we made it!" Kirishima practically dragged him in the direction of the ring of men circled around the large fighting ring in the center of the room.

"This was what had me so excited last week!" The redhead whispered not so quietly and jerked his thumb in the direction of the two men grappling in a quickly ending fight on the mat.

The alpha pheromones coming from the man laying on his stomach had his nose itching in discomfort for only a moment before the sweet smell of freshly sprouted grass came wafting behind it in a slaw wash, omega. The green-haired man dominating the fight was an omega, his thighs were wrapped around the struggling alphas neck in a crushing grip while he bent his opponents' leg over his shoulder in a back-breaking submission hold. It took the alpha only a few seconds before he gasped for air and slapped the mat in defeat.

Katsuki drank in the muscled form of the smaller man as he rose from his mounted position. His green hair swayed lightly, emerald eyes scanning the crowd. His chest was bare, leaving his chiseled physique on display, as he turned, scarlet eyes drew down to the firm muscled backside clad in tight black shorts, thickly corded thighs drew out from under the fabric.

How could this man be an omega? Sure, he was slightly short but everything about his was the opposite of any male omega Katsuki had ever seen, who were thin and frail.

Reality snapped back to him as Kirishima's hand flew into his vision. "Yo man, hello?" Katsuki slapped the hand away and glared at his companion.

"Just wait, man, it gets better." The redhead explained.

His eyes flew back to the ring just as a voice rand out over the murmuring crowd of alphas and betas gathered around the ring. "Next, number 9!" The green-haired man called out to the crowd.

A dark-haired alpha stepped into the ring, the pressure of his aggressive pheromones tickled Katsuki's nose unpleasantly and he couldn't resist the urge to sneeze.

The green-haired man stepped up to the alpha, seemingly unphased. "You're challenge request?" The smaller man demanded.

"I'm gonna fuck you bloody, omega." The alpha sneered and Katsuki bristled at the comment even as the men around him hooted and jeered.

The whole second gender thing had always annoyed him, pheromones from anyone, alpha or omega had always been unpleasant. All of society seemed so wrapped around everyone's second genders, all he ever got out of being an Alpha was the urge to bash everyone's face at the moment they spoke, whatever higher purpose, or greater standing in society that the media propagated wasn't what he had experienced in life.

The green-haired man let out a large sigh and tilted his chin upwards in defiance. "Only if you win." Was his reply as he assumed a fighting stance.

The opposing alpha did the same and a middle-aged blonde man at one corner of the ring raised a small bell before ringing it loudly.

Katsuki's' eyes struggled to follow the movement of the green-haired man. He moved like liquid as he bent low and dashed forward. In less than a second, the alpha was taken to the floor and pinned in a bone-crushing leg hold; his body held underneath the overwhelming pressure of the green-haired man's thighs.

Katsuki grinned in delight as the cocky alpha slammed his outstretched palm on the mat in submission just before the bone in his leg snapped from the smaller man's strength.

The green-haired man once again rose and retreated to the corner where the blonde whistle-blower was waiting with a towel and a knowing smile for the green-haired man. Several minutes went by as the defeated alpha dragged himself out of the ring, grumbling the whole time.

When he was finally out of the way the green-haired man turned around once more. He took in a deep breath before speaking over the crowd. "Number 10." He called in a solid tone.

A completely different kind of alpha from the previous one stepped into the ring. White and red hair, a large scar surrounding his face, and the physique of a trained fighter.

The green-haired man stepped up to his opponent once more and Katsuki frowned slightly as the small man smiled and spoke. "Your challenge Todoroki?" His tone was much calmer than it had been with the previous fighter.

The crowd grew eerily silent as the alpha replied. "A date Izuku." He spoke in slow measured tones and Katsuki felt something inside of him stir at the thought. He ignored the unfamiliar feeling and focused on the information he had just learned, Izuku, that was this omega's name.

"Only if you win." The green-haired man replied sternly as he assumed a different stance from his previous fight. He stood slightly taller than before his hands outstretched with loosely closed fists.

"He was here last week too." Kirishima spoke up next to him, his tone serious and quiet.

Katsuki felt the air in the room shift again as the whistle rang out once more. Izuku didn't go for a tackle immediately this time, instead, he was circling his opponent with careful movements. The opposing alpha moved in and Katsuki couldn't contain his surprise when he threw a fierce jab into the smaller man's abdomen.

Izuku however, seemed completely unfazed and barreled his fist down into the alpha's face. They started a close-quarters slugfest, neither one backing down from the other's pursuit. Katsuki's fist clenched at his side when a particularly hard blow landed on Izuku's face, but the fire in the smaller man's eyes when he looked up had his heart thumping loudly in his chest.

Emerald eyes blazed with ferocity and on the alpha's next swing Izuku jumped into the air, grabbing his opponent's head and swinging his knee up into the mans face. Blood sprayed out from the impact and as the two pulled apart the alpha swayed on his feet before dropping to the mat, completely unconscious.

Izuku panted slightly as the crowd remained silent for only a moment before erupting into cheers and loud swearing. The older blonde man made his way to Izuku and handed him a towel as he poured water from a bucket over the alpha who was still unconscious.

The crowd began to disperse from around the ring and Katsuki turned to face his friend. "Where the fuck do I sign up?" He growled roughly.

Kirishima smiled widely at him and pointed to a table with waivers and gym applications. Katsuki wasted no time in making his way to the table and filling out the forms. This was the most interesting place he had been in a while, and that omega, Izuku, he felt a pull to learn more about the small but vicious fighter.

A figure stepped up to the other side table just as he finished writing and Katsuki froze as the clean earthy scent from earlier filled his nose, he looked up and met deep pools of swirling emerald.

"Signing up for a membership?" Izuku spoke in a much smaller voice than he had used in the ring, his tone calm and friendly.

Katsuki simply nodded and was slightly surprised when the smaller man held out his hand for the forms. He handed them over without a thought.

"Bakugou… Katsuki, alright Bakugou-san the first month is half price, 2,000 yen. It'll be full price after that." The emerald-eyed man began mumbling slightly as he pulled out a cash drawer and filling box from under the table.

"You work here." The words slipped from his mouth in a rough growl and he watched as the small man straightened in front of him, giving him a proud stance.

"I do, is that a problem?" Normally Katsuki would have been grinding his teeth and restraining his clenched fists when asked a question like that. Instead, he felt strangely calm with this omega, the sweet scent of his pheromones seemed to lul his usual anger.

"No." He answered honestly. "Your fights were amazing." He wasn't angry, but he couldn't change the rasping growl of his voice and strangely, he hoped it wasn't offensive. He pulled out his wallet and paid the green-haired man his first month's membership fee.

"Ah… thanks. Oh, I'm Midoriya Izuku by the way." Izuku smiled and said as he handed over a receipt and newcomers' pamphlet. "I'll see you around." At his slight nod, the smaller man gathered the cash box and headed towards a door labeled 'STAFF'.

Katsuki couldn't help but stare as he left, despite the bruises littering his body he moved as if he felt nothing. He was brought out of his thoughts when Kirishima clapped him firmly on the shoulder.

"What was that man?" The redhead asked him in a playful tone.

Katsuki whirled and slammed his fist into his friend's chest. "Fuck off." He growled and marched for the door.

"Oh, now you're back to normal? Seriously what gives?" Kirishima asked him more seriously.

Katsuki finally stopped once they were outside and turned to his friend with a steady glare. He was annoyed, but he answered honestly. "He… smelled nice."

The redhead's eyebrows shot up and he sputtered nonsense while looking for the right words before he finally stopped at Katsuki's sharp growl.

"I guess, I'm glad I brought you then." Kirishima replied with a wide smile and Katsuki growled again before hitting his friend once more in the chest and walking in the direction of their apartment building.

Izuku hummed in pleasure as he held the cold pack to his swelling cheek. Todoroki hadn't held back tonight, but he had persevered and he felt pride in his victory. At the same time, a small hint of sadness crept over him with the victory.

Despite his obvious ability, he couldn't go professional unless he was mated. Omega athletes had to be mated to prevent incidents, especially when it came to contact sports. But he refused to bow down to anyone who wasn't his superior.

Toshinori had taught him to have pride and value himself and he had learned from the kind man's teachings. His mother had passed away when he was still in high school, due to his second gender being omega his extended family had refused to take him in, seeing him only as a burden.

He had ended up dropping out of school, homeless, and eventually starving to death on the doorstep of the MMA trainers gym. That's where Toshinori found him, the man took him in, fed him, healed his emotional pain and then taught him to fight.

If there was anything he loved in this world, it was fighting the way Toshinor taught him to, proving his value, and he aimed to one day be the number one pro fighter. He admired and respected Toshinori and felt a great deal of pride at the thought of bringing home a title belt to his home gym.

Yet still, he wasn't in a rush to find a mate and so he had proposed the once a week challenge night to start looking for a suitor. Even then, nobody had been able to compare to what he was capable of, the only one who even put up a fight was Todoroki, and admittedly, his polite requests were endearing.

Even then, his alpha pheromones did nothing for Izuku. He took suppressants religiously but he had never once reacted to an alpha's spike in pheromones, everything smelled sour to him.

His mind flashed an image of ashen blond hair and scarlet eyes and he closed his eyes in thought. That alpha hadn't smelled terrible, the lingering memory of thick smoke and the salt of the ocean came through his mind and he blushed slightly.

A knock at the door sounded and Izuku called out, already knowing who it was. "Come in."

Toshinori walked in and quickly shut the door behind him. "You were great tonight." He faced Izuku with a smile.

"Just doing what you taught me." He replied and smiled back at his mentor and trainer.

"Was that a new recruit you were talking to tonight?" The blonde man asked and Izuku perked up at the question.

He pulled the file box across the desk and dug out the new file, handing it over to his trainer who flipped it open. "Another alpha, no surprise…" He trailed off as he read the man's information.

"Says he has no fighting experience, but he works as a bouncer. I guess we'll have to wait and see if he's worth anything." Izuku could hear the appraising tone and looked at his mentor with appreciation. The man diligently looked over each new applicant as a potential fighter, and as a mate for his adoptive son.

"I'm going to head upstairs. I'll see you in the morning." Toshinori nodded as he continued to read and Izuku chuckled slightly as he made his way out of the building and around the back to the stairs leading to the two upstairs apartments that he and his mentor shared. He was surprisingly tired and looked forward to falling into his bed.

Thanks for reading. Totally got inspired to write something like this after reading Total Knock Out by KyuukaKoinu, plus a little Hajime no Ippo soul thrown in there. Please leave me a review, I appreciate all the comments!