Shinjin 22-sai no Onee-chan Ura Mono AV Debut!! Saitou Hanako

Saito Hanako is a talented woman attending a prestigious university. Even from the perspective of me, her younger brother, she is beautiful and has a great personality. She is the kind of sister one can proudly show off anywhere. Secretly, I have been harboring a deep yearning for my sister. Well, to be honest, it's more like an obsession—I've been using her as material for my masturbation fantasies. One day, my sister dropped a bombshell.