Mami, who lives with her husband and father-in-law. Her husband is always tired, and her father-in-law is cold and unkind. The one who brightened up her dark life was her brother-in-law Keiichi. Although he was a playboy, he was exciting to Mami. Before she knew it, she had given in to his persuasive words and surrendered her body. As she delved deeper into the pleasures of sex, one day, her father-in-law caught them…
