My husband is busy with work, and even on our wedding anniversary, he prioritizes work... At that time, Nanami received a call about a class reunion. Nanami learns that her ex-boyfriend Tsukasa is also there and decides to go there out of nostalgia for her. On the night they were enjoying seeing her again, there was a sudden heavy rain...then Tsukasa suggested they take shelter from the rain at a hotel... A married woman who vowed to be pure after her marriage revealed her past self as a slut when she had sex with her ex-boyfriend.