The leader of the six knights, Miki's teacher, the master of the Izuma dojo and until recently the student council president. A third-year, he is shown to be the strongest of its members, holding a great deal of authority over the group. Izuma is the descendant of a demon who escaped to the human world and he was taken up by Saint Ishiyama's headmaster upon losing his place in society for showing his powers in a previous school. As such, he can also release the dark aura seen in full demons.