Introducing Ai Mukai, who looks good with short hair. A married woman who received a duplicate key lived alone in a room where a male student was creampied until he graduated. - Mukai Ai

The movie revolves around the encounter between a married woman, Ai Mukai, and a male student, Saito, under unexpected circumstances. Their initial meeting leads to a complex exploration of their personal lives, desires, and relationships. As they navigate their interactions, the story delves into themes of connection, intimacy, and the blurring of boundaries, all set against the backdrop of their individual struggles and aspirations.