"I'm sorry... I turned you into a magician!" Takeshi Nanase, a high school student in the regular world, meets Mui Aiba, a girl from a world of decay, and finds himself caught up in a grand magical war. It's a war to help Mui, a war to save the world, and a war to change destiny. The curtain rises on this modern tale of authentic magical action.
Takeshi and friends live their ordinary lives as real magicians in a world of decay. As students of Subaru Magical Institute, they practice magic and prepare themselves for war with the Ghost Trailers. And in the middle of it all, relationships between Takeshi, Mui, and Kurumi start to get rocky!