A certain incident pushed high school student Tsuguto Sumihara over the edge of despair, leading him to end his life with deep-seated hatred and regret. However, rather than facing eternal rest, he finds himself waking up in an unfamiliar cave. Everything around him is different - there are no traces of modern society, only a colossal mountain range stretching far beyond his vision. As Tsuguto encounters a young girl in this unknown world and discovers his own awe-inspiring ability, he embarks on a journey of self-discovery unlike any other. Join the shovel-wielding young boy, the little girl, and their enthralling adventures in a realm beyond the ordinary.
