When Tsubaki and Takuro got married, they were to live with Yoshio, Tsubaki's father-in-law. Tsubaki was impressed by Yoshio's kindness, so they got married and started living together as a family of three. At first, her father-in-law seemed like a serious guy, but in fact he was a total pervert who would steal her underwear, set up hidden cameras all over the house, and secretly film Tsubaki changing and having sex while masturbating.