Maou na Ore to Fushihime no Yubiwa

Kusumi Chiharu receives a message informing him he has been chosen as a Monster Tamer and must select a partner. He dismisses it until a large package arrives the next day. Expecting adult magazines, he opens it to find an unconscious, nearly naked girl inside. She is Zonmi, a ghoul who plans to fight alongside him. Soon, he discovers that several other girls at his male-dominated high school are also magical beings, and Zonmi might not be the only one interested in partnering with him.