Sent by the angelic administration, Karasu is tasked to capture a demon who has been living among humans. However, he is surprised to find out that Shirasagi wishes to renounce his demonic heritage and powers so he can live as a respectable human. Shirasagi is a kind-hearted individual who serves as a priest at a local tavern and teaches children. Despite this, both heavenly and hellish beings desire him, which could result in a brutal clash.