Most of the world's needs are fulfilled by humanoid robots called hIE's. One day, 17-year-old Arato Endo meets the android Lacia and becomes her owner. She is one of five androids with advanced AI. Each of the five units have their own motivations, and fight to gain each other's abilities. What will the relationship between man and machine be moving forward? That is something Arato must find.
Pascal-sensei is an elementary school teacher who is so stupid, he cannot even write his own name. He does whatever he likes in his classroom. Plus, by all appearances, he is not human.
Rokuro is from a family of exorcists, but he'd rather be a singer, a soccer player or anything but an exorcist! He's forced to own up to his own incredible potential when new arrival Benio stirs his competitive spirit. But their rivalry gets a twist when they earn the prestigious title of "Twin Star Exorcists"—two supreme fighters fated to marry and birth the ultimate spiritual warrior!