A school wonder life of two girls! Nagi, a girl who sees stars in her eyes when she wonders, and Yu, who cares for her. The friendship between the two people is at the mercy of the mysterious events that occur...

A young man whose motto is "Never commit suicide" happens to meet a boy with a cut mark on his wrist and follows him out of curiosity. However, the boy's path leads him to a world of "death" that he has never...