The Greatest Promise (BakuDeku)

Chapter 1: A Nervous Hero

One week, it was one week until Izuku Midoriya turned 21. There is a mixture of emotions running rampage through his mind as he sits on the edge of a skyscraper overlooking today's patrol route. He feels excited to be reaching an important milestone in his life, yet he can't help but feel anxious. Once he turns 21, Izuku will be able to find his fated mate. On the stroke of midnight he would be able to smell his fated mate, and be drawn to them if they were close by.

This is something that he is concerned about. Being a Pro Hero comes with a lot of risks and he worries about the strain his dream job would most likely place on his relationship. Izuku has a secret, one that only a select handful know about. He's an Omega, a male Omega. Omegas are rare to begin with, male ones even more so, and because of his job he must keep it a secret. If society, villains to be precise, were to find out then he would struggle to do his job effectively.

Also, what Alpha would want their Omega risking their life everyday? No, Izuku had decided early on that he needed to keep his secondary gender a secret and to hide his scent from others so his fated mate wouldn't be able to find him. To the world Izuku Midoriya is a Beta.

Izuku and his Mother hadn't been that surprised that he had presented as an Omega when he turned 14, he had fit the stereotype from a young age. The challenge was hiding it from the world. Suppressants covered his sweet scent enough but his heats were a whole other matter. It was very unhealthy to skip them all together, so they came up with a plan to suppress them enough to not make it look suspicious. He would be out of school for one week every three weeks, with either an illness or family circumstances.

The whole plan had gone very smoothly, to Izuku's surprise. He had kept his head down through middle school, being bullied by his former best friend had helped him stay below the radar. His bully, the infamous Katsuki Bakugo had of course presented as an Alpha. Once the head strong blonde had presented his arrogance only grew, which in turn caused Izuku's crush on him to develop even further.

Once he had made it into UA, he had to be extra careful. The staff were aware of his second gender, there were a select few Pro Heroes out in the world that were Omegas and they had helped him at various stages of his school career. Keeping it from the whole of his class became more of a challenge and his close circle of friends all knew by the time they had graduated.

Izuku felt his phone buzz in his pocket, reaching for it he saw that it was his best friend, Ochaco Uraraka. Smiling, he answered the call.

"Deku, do you have a minute? I know you are working but I'm just finalising the plans for next week. I've got the venue sorted and I've kept the guest list short as you asked. But Red Riot wanted to know if Bakugo was invited?" Uraraka paused at this, she was the only one who knew about Izuku's feelings for the blonde haired Alpha and had left him off of the list on purpose. She didn't think Izuku needed that emotional distress when he was already anxious about turning 18.

The Alpha and Omega hadn't spent any real time together since they had both graduated from UA, Izuku had thrown himself into his work as a Pro Hero to help distract himself from his thoughts on the blonde. Now, Izuku was able to think about the Alpha without emitting any pheromones. The green haired Omega now only saw Bakugo either on missions or on the news.

"Sure, Uravity, I can't see any issues with that. I haven't seen the Great Explosion Murder God Dynamight since we graduated," Izuku giggled as he spoke, using that old name always made the Omega think fondly of the blonde. It would be nice to see his old 'friend'. Their relationship had developed somewhat through their time at UA, they had been able to mend some of their broken bridges but there was still an awkwardness between the two.

"Oh good, 'cause I've already told Red Riot yes," Uraraka squealed, "thanks Deku! I'll let you get back to your patrol. Don't be late and please wear something other than one of those silly t-shirts." With that she hung up, Izuku chuckled and returned his attention to the streets below him. He had a job to do and that was his focus for today. There was only an hour or so to go on his patrol, it had been a quiet day. A good day, but that also meant he had too much time to let his mind wander.