Ryoko, who became a mother at the same time as getting married, had a problem. She couldn't be affectionate with her husband in front of her teenage son, and even the occasional sexual encounters didn't satisfy her at all. One reason was that her husband was older and his libido had waned, but she couldn't feel love through selfish sex. Before she knew it, Ryoko had begun to console herself out of loneliness. One day, Ryoko, who was feeling frustrated as usual, jokingly provoked her son...