A bewitching woman's love story, the undulating heat of her lustful flesh

Emiko married into her husband's parents' house. She was welcomed by her husband's mother, Chizuru, and older sister, Yurie, and was at the peak of happiness, but soon after they got married, her husband went on a long business trip, and she had no choice but to relieve her loneliness by indulging in masturbation. Seeing this, Yurie gently touches her skin and heals her overly sensitive body. Then he went to his mother and advised her to learn the ways of this family. One day, when he has finally settled in as a member of the family, he receives a phone call...