Desde cedo que Shigeo Kageyama, também conhecido por "Mob", tem conhecimento dos seus poderes psíquicos. Agora no oitavo ano, Mob usa os seus poderes para auxiliar Arataka Reigen, um falso exorcista que se aproveita da ingenuidade do jovem. No entanto, os poderes de Mob escondem uma força terrível.

Meisuke Nueno (Ryuhei Maruyama) is the homeroom teacher of a 2nd grade 3 class in high school. He is referred to as Nube. He sometimes carries himself as an idiot, but he does care about his students a lot. He also has a hidden side. Meisuke Nueno has a demon's hand. He solves monstrous case and fights desperately to save students from monsters.