Rin becomes the housekeeper of Atsushi, a young adult man who lost both parents. Though he keeps everyone at a distance, she patiently cooks, cleans, and tries to earn his trust. Focused on her work, she never realizes how much her sweaty cleavage and full, soft ass are tempting him. One day she is caught in a downpour while shopping and returns with her clothes soaked and transparent. When she tries to resume her chores, Atsushi sees her and forces himself on her, drawing them into intense, sweat-soaked sex.