Yato, a young theologist without sight, embarks on a quest for self-improvement, with restoring his vision as a primary goal. Following rumors of a mystical lake in a cave rumored to possess miraculous healing powers, he crosses paths with Garo, a female Kirite—an outcast from a bat-like humanoid clan. Together, they forge a bond as they explore the depths of the cave, forming a unique interspecies connection that soothes their souls.