After losing his job, Hirokazu, the younger brother, has been staying at his older brother's house. His older brother, due to work-related reasons, frequently goes on long business trips. As a result, Hirokazu often finds himself alone with his sister-in-law, Hazuki. Observing his sister-in-law diligently and tirelessly handling household chores, Hirokazu eventually realizes something... His sister-in-law has an incredibly beautiful butt! That is to say, it is a butt that would make any adult man bow down, a completely flawless, perfectly shaped rear.
