Repression (слэш)

Between the ages of sixteen and eighteen-- you either presented, or nothing happened. Yuuri had waited and waited. Neither him nor Phichit had anything happen to them. On his twentieth birthday, he took Phichit with him to the registration office.
Yuuri was a beta-- it was all he had ever known, it was what he was. Marked and branded. Until a certain Alpha came into his life.