Ryuta, who is busy with his job hunt in Tokyo, is temporarily living at his aunt Sae's place. Sae has always been kind and warm-hearted, making her someone Ryuta deeply admires. One night, when Sae returns home late and seems a bit off, Ryuta grows concerned and quietly slides open the fusuma door. He finds her lying unconscious, seemingly drunk and completely exposed. Worried, he approaches her, but the sight of her defenseless body awakens uncontrollable desire, and he gives in to the moment. In the silence of the night, their relationship takes an unexpected and intimate turn.