Soon after remarrying, Yumi's husband took on a large project and their nightly activities ceased. She patiently waited for his work to settle down, but half a year passed with no sign of improvement, leading her to days of self-comfort. One day, as Yumi was indulging in her usual self-pleasure, she was suddenly attacked by her stepson Shinya. 'I can do it better than Dad...' Shinya's sweet whispers began to confuse Yumi.
