Kaho, a married woman who returned to her husband's parents' house. One day, she was caught in a guerrilla downpour on her way home from shopping, and when she got home, she was drenched and her clothes were clinging to her skin. Kaho's gaze from the second floor looking at her voluptuous figure. Her brother-in-law, who has been withdrawn for years on the second floor of her parents' house, begins to have lewd feelings for her. The creaking stairs, echoing footsteps, burning her lust, her brother-in-law attacks Kaho.
