The manga's story begins when a peasant named Hanbē asks a girl named O-haru for her hand in marriage, but O-haru confesses that she is already thinking of another man named Masakichi from a neighboring vil...

A group of high-school students had an accident on their way to a trip and died but they find themselves in a classroom with a black sphere.

Original Webtoon: Lezhin, Naver Series, Toomics