Yoshino, who recently moved into his new home, was holed up in his room and spending his days listlessly. One day, while looking out the window, he saw his neighbor Yuka hanging out the laundry. Yoshino was mesmerized at the sight and it became a daily routine for him to watch Yuka do the laundry, but he suddenly noticed a sheet hanging out among the laundry that had an obviously unnatural stain on it and it bothered him. Then, when he looked next door as usual, he saw Yuka masturbating in her bedroom while soaking the sheets...