Yuri lives in Tokyo with her hard-working husband. One day, her nephew Takashi came to Tokyo from the countryside where her husband's parents' home is for her exam. Yuri was enthusiastic about her rare visitor, asking him to let her stay at her uncle's couple's apartment for about a week until her exam performance. However, contrary to her aunt's feelings, her nephew Takashi, who is a student who is in the prime of her spear, is focused on her young, beautiful and busty aunt's female body. And one night, when her husband was away on the night shift...!
