A jobless man in his forties, Kiyohiko, had a woman named 'Kurumi' move into the apartment he lives in. She has a cute aura but large breasts. One day, while out with her husband, she was harassed by a man. With her unreliable husband watching, Kiyohiko saved her from the predicament. Kurumi looked at him with grateful and envious eyes. Starting the next day, Kurumi appeared without a bra under her clothes, gradually seducing Kiyohiko.
