Yamamura Sakura is an ordinary human girl that has recently transferred to a new school, but there's a twist! She has been placed in the "Aijin" class, Aijins being supernatural beings and demihumans! In her desperation to fit in in and to prove herself to her demihuman classmates, she tells a "small lie": That she's actually a succubus...and so begin her hectic High School days in a desperate attempt to fit in and hide this small lie!