For the bar exam, my stepsister's son Yuya is staying over for a while. So, my stepsister Kei, who used to be a lawyer, decided to teach him... However, Yuya is also a young man. He can't stop thinking about Kei's enormous breasts as she kindly teaches him. Finally, he can't hold back anymore and pushes her down when they're alone. Kei, who has been secretly frustrated with sex with her husband, knows it's wrong but her body screams in pleasure as she is relentlessly assaulted...
