The sexually masochistic yakuza boss, Yashiro, isn't the type to warm up to others easily. But when Chikara Doumeki, his newly hired bodyguard, catches his interest, he reconsiders his "hands-off" policy with subordinates. As Yashiro's invitations fail, the yakuza boss finds out his bodyguard has a very personal reason for staying at arm's length.
The main character mentions being sexually abused by his step-father, as well as the other main character's sister being raped by their father (he has a flashback of seeing it), and his virginity being lost to the school nurse