Misuzu, who has a personality that makes it hard for her to say no when someone asks her for something, lives a comfortable life with her husband. However, there is one problem... Akira, her brother-in-law, who doesn't get along with her husband. One day, after Akira, a divorced and unemployed man, is staying at Misuzu's house at her mother-in-law's suggestion... Akira, who has become desperate, asks her to show him his naked body, and Misuzu reluctantly accepts. However, the innocent Misuzu had no idea that this was the beginning of Akira's plan to turn her brother's wife into his sex friend...