A close-knit family of three. However, Shiho had a secret she couldn't share with her husband - she was forced into having sexual relations with her son against her will. She thought it would be just once but he didn't think so. One day, while remembering their intimate moments, Shiho masturbated in front of a mirror. Her son caught her in the act and said, "Mom, you really want this too, right?" He then made his erect penis bigger by squeezing it... *The contents may vary depending on the distribution method.