Fudou Shiharu is an ordinary middle school student. She's clumsy, hates gym class, is not, shall we say, academically gifted, and is generally just a nice girl. Oh, and she's also the reincarnation of Lucifer and an accidental low level reality warper, while her best friend, Jinguu Emika, is the reincarnation of an angel ( specifically, the Archangel Michael) who has the power to turn back time. Why is Emika protecting the reincarnation of The Lord of Lies? Why doesn't Shiharu remember who she is? And why do so many of her classmates seem to know all about her?