A married woman, Misaki, who spends the night lonely because her husband is only on a business trip. One day, she finds out that Kimura, a middle-aged man in the next room, is writing an erotic novel, and she becomes obsessed with the writing. Misaki tries to tell Kimura, who came to pick up the manuscript she lent her, the height of her writing power. However, she couldn't stand her hotness, and she let her fingers crawl in her own cracks. This masturbation triggered the two people who were never supposed to meet, and later became a relationship with a violent affair that made them drenched in sweat.
