Chii-chan Kaihatsu Nikki

Fuente: AniList

While her parents were away, Chisato's uncle snuck his way into her room, looking through her unmentionables... She finds him in the act and he decides to make good on her promise from her childhood and rapes her while filming it. Blackmailed with the video he made she is forced to visit him and give in to his every demand...