Those who lose themselves in this demonic bath will have their souls taken… Izumi Minamoto, a boy who loves baths more than anything, lives a peaceful life enjoying his “Dear Bath” time. But one day, a demon girl named Yuna appears before him. Her goal is to steal the “soul” that escapes from Izumi’s mouth as he relaxes in the bath, and she tries all sorts of seductive tricks to tempt him! What will become of Izumi’s peaceful bath time?