“I want to become your thrall…!” A crossdressing girl and doting vampire’s dangerous cohabitation is about to begin! After losing her parents and being abandoned by her relatives, Mito is left all alone in the world. When she’s kicked out of the restaurant where she works with no money and no place to live, she is taken in by Ruka, a vampire. In exchange for giving Ruka her blood as his “food,” she ends up living with him in a boys’ dorm full of beautiful boys with unique personalities…?