The son had unknowingly started to view his mother's large breasts sexually, causing him to become cold. He decided to distance himself from his mother because things couldn't go on like this. Kei felt lonely when she noticed her son becoming distant and was deeply saddened by his resolve, but she invited him on a hot spring trip as a last resort. The two of them alone in a space, with his beloved mother's large breasts right in front of him... Mother and son repeatedly copulated in the sweet trap of incest… What awaits the fate of the two who opened the forbidden door is…
