Shota and Akari are two sisters, both like cats and mice, every time they get into an argument, they give their parents a headache. But that's only when in front of her parents, and when her parents don't notice, Akari immediately turns into a woman, she constantly seduces her teenage brother, trying to fuck each other anywhere in the house! Even though her parents slept next to her, she still made Shota discharge all her sperm into her, when Shota was bathing in the bathroom... And when her parents go out, Akari constantly uses her lewd body to squeeze out every drop of Shota's sperm...