Toshiya ends up living with his aunt, Kasumi, the woman he once had a crush on. His feelings for Kasumi go beyond mere infatuation—they stir something deep and uncontrollable within him. Sharing the same roof intensifies his suppressed desires. One day, he accidentally sees Kasumi bathing. He watches as she sits alone, touching herself with a look of loneliness. Realizing her sexual frustration, Toshiya can no longer contain his emotions and pulses with excitement. In a bold move, he makes her an irresistible proposition.