Tsugunai – Episode 4 (EN)

Alone in the sealed villa, the meticulous and upright honor student Aoi hides, heartbroken as her friends vanish one by one amid screams. Desperately seeking escape, she encounters the fallen Kanami, now corrupted and masturbating while luring Aoi into the trap—prompting another frantic flight. Swearing to rescue everyone herself, Aoi then reunites with her supposedly captive little sister Natsuki, who appears free and tearfully joins her in searching for an exit. But this "reunion" is a cruel setup orchestrated by Ryoichi, the avenging teacher. Exploiting Aoi's disgust toward her own mother's similar degradation and her resentment toward the father who caused it, he subjects her to thorough humiliation. Forcing her into the same degrading positions, he pounds her virgin body mercilessly, making her witness and experience the familial shame she once despised. Her clean-freak principles crumble under repeated rape, unwanted arousal, and psychological pressure—body heating uncontrollably as she climaxes despite horror. The once-unbreakable moral fortress falls into sobbing, lightless submission amid sisterly despair and betrayal. This fourth and final episode culminates the revenge saga with extreme mind break, incestuous trauma themes, hardcore penetration, forced orgasms, crying degradation, and profound corruption.