The Nagareta couple have been married for five years. Minami's once-kind husband's love for her has cooled, and he has begun to become violent towards her over trivial matters. One day, her father-in-law comes to visit for the first time in a long while. Minami is shocked and in tears that her father-in-law, who still treats her kindly as before, has seen her husband's violence. Her father-in-law gently lends her his arm. His warmth heals the wounds in Kokoro. And before she knows it, she accepts his passionate kiss and allows him to have a physical relationship...