Raised as the heir of the prestigious Ayamachi family, Ritsu believed his future as a wealthy alpha was set in stone. He would graduate high school, wed a pre-arranged partner, and follow the path his father laid out for him. The teenager has never been good at school, however, and his lack of alpha-like perfection leads his suspicious parent to have him retested. When it's discovered that Ritsu is actually an omega, his disgusted father no longer has any use for him and banishes him from the family in the cruelest way possible - by selling his son to a brothel, and into a life of sexual slavery.