Yui lives happily with her kind husband. Her only complaint is that her husband won't put it on her from behind during their nightly lovemaking. One day, Takeru, a senior from her university days, moves into the apartment next door to where Yui No lives. Yui is happy to be reunited with Takeru, and brings him some home-cooked food out of consideration for him. However, Yui her defenseless, Takeru becomes aroused and attacks her from behind. Pushed deep from behind with a fierce thrust that her husband doesn't have, Yui climaxes countless times and gradually loses her resistance...