1910s, Japan. A town with mysterious black snow. Kodo Iwamoto, a student at a military school dedicated to studying the paranormal, is sent to investigate. There, he meets a boy who believes he’s sick, but Kodo recognizes the illness as something else: supernatural abilities. Kodo recruits the boy to the school and sets off across the country, chasing mysteries and searching for others like him.

Childhood friends Tachibana Hinata and Jinguji Tsukasa were living the everyday life of office workers. Then, on the way home from a mixer, they were sent flying into another world by a mysterious being. Once there, Jinguji sees his best friend has been turned into a beautiful blonde-haired, blue-eyed girl...?! The adorableness of Tachibana’s female form completely flummoxes Tachibana. But these two are each others’ best friends. To keep their relationship from being destroyed, they must defeat the Demon Lord as quickly as possible and return to their original forms.