Everyone was in the classroom. When suddenly, a girl entered in the classroom. It was a new student. She introduced herself and sat next to me after that. She seemed to be an omega. I was a bit shocked by that because there wasn’t many omega heroes in the world. I looked at everyone in the classroom, but they don’t seems to noticed that she was an omega. After all, she wore a necklace to hide her pheromones and I’m an alpha.