“Hajime Mitsuhashi”, who is just a normal 11th grade high school student, transferred to this school. He is too normal to make any friends and even to join any club activities. Such a normal boy somehow joined a club, though, which was… the club formed by a Demon and a Witch!! The purpose of the club is to teach the Demon and the Witch what human society is like and help them successfully graduate from high school. Is he going to make the Demon and the Witch graduate from high school!?