Anri and Toru have been friends since high school, but maybe it is too early to call them best friends. Anri dislikes gays since his male boss had continuously harassed him. Meanwhile, Anri is a proud gay bottom! One night, Toru was in heat, and he felt calm being touched by Anri. Since then, the relationship between them changed dramatically! It seems like Toru always has something in his mind that he is afraid to tell... If you are a fan of reversible BL, ""The Boy is A Bottom"" should be included to your bookshelf! This volume includes two extra chapter from ""Rule No.1"" series. Etsu and Rio started living together. Will their new life affect their relationship?