Chii-chan Kaihatsu Nikki

With her parents away from home, young Chisato's privacy is shattered when her uncle sneaks into her bedroom to rifle through her intimate belongings. She unexpectedly catches him in the act, but rather than retreating, he confronts her with a disturbing claim. Invoking a supposed promise she made during childhood, he forces himself upon her and secretly records the entire assault on video. The traumatic encounter marks only the beginning of Chisato's nightmare. Armed with the illicit footage, her uncle leverages it as blackmail, trapping her in an inescapable cycle of coercion. Threatened with the exposure of the recording, she is stripped of any ability to resist or seek help. Bound by fear and manipulation, Chisato is compelled to visit him repeatedly, forced to submit to his every demand. What begins as a severe violation quickly spirals into ongoing exploitation, leaving her entirely at the mercy of a predator who uses the recorded evidence to maintain absolute control over her life.