katsuki had been with his parents at a doctor because of his second gender and he was an omega.. he didnt really care since he was 6 what should he care about? So well ever since he had to wear a collar because it would be dangerous for him if not probably so his mom just forced him to. Well today it was katsukis first day in his new elementery school but katsuki was confident omega or not. So he went into the school kids everywhere. When he got into the class he saw everyone being with a person well everyone exept a boy sitting alone at his seat in the corner