Since moving into the neighborhood, Sanada has spent every day listlessly shut inside his room. One day he spots his beautiful neighbor Yuki hanging laundry and becomes so captivated that watching her turns into a daily ritual. He then notices suspicious stains covering the sheets she puts out to dry. Looking through the window as usual, he finally discovers the reason: Yuki is masturbating in her bedroom and soaking the sheets with powerful squirting orgasms.