Kusumi Chiharu gets a message one day that he has been selected as a Monster/Demon Tamer, and he is prompted to select his first partner. He thinks little of the message until he receives a giant package the following day. He assumes it's the porn books he ordered, but the huge box ends up containing the unconscious body of a mostly naked girl! She's a ghoul named Zonmi, who intends to fight with him as his partner. However, it turns out that other hot girls at his mostly-male high school are also magical creatures, and Zonmi may not be the only one who wants to fight by his side!

Adaptation of the light novel series written by Kankitsu Yusura with illustrations by Shugasuku.