I've been married for several years, blessed with children, and living a happy life. My son weaned much later than most children, so I spent my days breastfeeding, but as he grew and weaned, I began to feel a sense of loneliness... Since giving birth, we haven't had sex, and my desire has only grown. Then, my brother-in-law, Hanzo, came to Tokyo to look for a job and we decided to live together. And the throbbing in my heart just wouldn't subside...