Haunted by his horrible high school experience, Makoto Fuwa (26) receives an application for enrolling into a high school from a mysterious old man in a suit. Supposedly, the school he runs accepts all sorts of students, and he offers Makoto a chance to redo his high school experience.

Enticed by free tuition and a unique opportunity he can't refuse, Makoto heads to the entrance ceremony, only to be surrounded by monsters, deities, and angels. Among them is Thanatos, the "God of Death," who keeps staring intensely at Makoto, the only human student at the school!Additionally, Makoto finds out that in his new environment, humans are highly sought after for a particular reason...