As a new office lady, Amaharuka Aina starts working and a waterworks worker visits her room. Suddenly attacked, she is forced into passionate kisses and caresses, only to be shocked to find out the worker is a woman. The next week, the worker returns and this time begins to violate her anally. Initially resisting, she gradually begins to feel pleasure and eventually reaches a climax through her anal hole. When she learns the worker's true identity, Aina's masochistic tendencies awaken through the violence and pleasure... A hard lesbian work where she is made to climax through anal stimulation many times and falls into pleasure.
