Hearing rumors of a cute oni, Ryusei goes on a mission to capture said creature. Using handcuffs and ropes to aide in his mission to take said adorable oni home, a strange light emits from the Teppei. It washes Ryusei with a heightened sense of lust he's never experienced before.

Taken on a trip away from his homeland by this sadistic man and being turned into a toy, Teppei decides to make an escape! The whole world is waiting out there for him! But with no money or knowledge of the area, he finds himself in quite the predicament.

This book is a clumsy love comedy featuring oni Teppei Nanase who struggles for his freedom and the playboy-turned-monogamous Ryusei Kamiya.