Inshitsu Otaku ni Ikareru Kanojo

Synopsis

Based on the erotic game by Pin-Point. Shuji enjoys a tranquil life with his younger sister, Saki, though he harbors secret feelings for her, and his libido grows increasingly unmanageable each day. One day, Saki confesses, "I love you.... I've been always thinking about you since I was a kid...." Consequently, they begin a romantic relationship. However, their happiness is shattered by an email stating, "I know your everything...." The message includes a photo of Saki changing clothes and masturbating. Saki assumes a stalker is responsible. This individual issues various immoral commands to her. Although she initially attempts to resist, she gradually becomes addicted to the situation.... Will Shuji be able to save Saki...?