Tadashi is an unsuccessful figure sculptor who dreams of making beautiful girl figures for a living. But after a child brutally criticizes one of his prized creations at an event, he heads home in despair, only to be struck by a truck and killed. When Tadashi opens his eyes again, he finds himself reincarnated in another world and surrounded by children belonging to all sorts of fantasy races. There's Gogo, a rambunctious golem girl; Lily, a timid vampire girl; Elmina, a precocious elf girl; and plenty of other troublesome youngsters. To make matters worse, Tadashi's new ability seems completely useless, allowing him to create little more than hollow imitations, while the children around him possess enough power to cause some very real destruction. And somehow, despite not even liking children, he's ended up becoming their teacher! Surrounded by an unruly class of ridiculously powerful demi-human kids, an awkward reincarnated otaku must use what little he has to guide his students and somehow survive his unexpected second career as a teacher in another world.