Karen Mochizuki, a second-year student at Kazamidori Private School, is a very ordinary girl who can be found anywhere.

However, her true identity is the evil extraterrestrial life form "Dark Lore Species" who plans to invade the earth. It was "Explosive Angel Azriele" the transforming heroine of justice who fights.

Such a girl can be a maiden in love at her age if she undoes her transformation. In the midst of a sweet and sour youth romantic comedy with her boyfriend "Hiro-kun" who has been dating for a month.

However, the devil's hand of the evil organization was secretly creeping up on such two people.