My sister's room smells like masturbation and I get a full erection! A dried fish woman who is turned on by a cock she hasn't seen in 10 years turns me into a meat vibrator while shaking her big tits! Mary Tachibana

The movie revolves around the reunion of siblings, Mary Tachibana and Akkai Shoiichi, after a decade apart. The title suggests a provocative and intimate encounter between them, hinting at a complex and potentially taboo relationship dynamic. As they reconnect, their interactions are marked by a mix of nostalgia, awkwardness, and unspoken tensions, setting the stage for a dramatic exploration of their bond and personal struggles.