Sougaku Kanon

A self-called "Youkai-hunting youkai". For some reason he was sealed in the arts club room.
He's got an elusive and easygoing personality, and he often likes making fun of other people.

He ordered Itsuka and Maki to repair the broken Great Spirit Way seal, but he's also avoiding the fact that he tried to kill Itsuka.

"From now on, you're gonna solve the mysterious incidents around the school!"