Following Yumi’s mother’s death, Yuuto integrates into her household, their proximity fostering covert mutual yearnings that intensify over time. His discovery of a mysterious videotape unveils hidden fantasies entwined with domination and submission, manifesting the deepest desires of those who watch. The tape fixates on Yuuto’s relationships with Yumi, her classmate Ruri, and his girlfriend Kaori, blurring reality and fantasy.

Under the tape’s influence, Yuuto is thrust into dominant roles within BDSM-themed scenarios, some involving nonconsensual acts. These fantasies materialize in anachronistic settings like the Meiji era, clashing with the story’s modern backdrop. Compelled by the tape’s addictive pull, Yuuto repeatedly indulges, though its spillover into his daily conduct stays ambiguous.

Yumi’s accidental encounter with the tape awakens parallel cravings, triggering a clandestine reckoning with their taboo attraction. As Kaori and Ruri are drawn into the tape’s orbit, Yuuto becomes the linchpin of their collective fantasies. The narrative suspends resolution, trapping the characters in a web of unresolved tensions.

The tape’s origins and mechanics remain opaque, serving purely to excavate repressed urges. Yuuto’s background stays unexplored beyond his entanglement in these events, his arc ending without confronting the tape’s enduring curse or the ethical shadows cast by their enacted desires.