Kusumi Chiharu's routine is interrupted when he receives a message informing him that he has been selected as a Monster Tamer and must pick a partner. Although he initially disregards the message, he becomes intrigued when a massive package arrives the following day. Assuming it contains the pornography he ordered, he is surprised to discover an unconscious, scantily-clad ghoul named Zonmi, who has offered to battle alongside him. As he adjusts to this new reality, he discovers that other striking girls at his all-male school are also magical creatures, presenting him with more potential partners than just Zonmi.
