​In this enticing episode, Shuji leads a peaceful life with his beloved younger sister, Saki. However, a secret desire for her grows within him, consuming his every thought. Their intimate bond unexpectedly blooms, as they confess their love and become a couple. Their joyous existence takes a twisted turn when an ominous email disrupts their happiness. Threatening to expose personal information, the email contains a scandalous photo of Saki engaged in private activities. Saki believes she is being targeted by a stalker, yet the stalker’s demands push her boundaries, drawing her deeper into a world of immorality. With Saki spiraling down this dark path, will Shuji be able to rescue her from her torment?​