She is the pride and joy of raising her son alone. However, he has no interest in women and occasionally touches her body while she is sleeping. Nothing more happens, so Kaori tries not to pay it any attention. One day, she takes a long weekend off and goes on a trip to a hot spring with her son. While on the trip, her son suddenly confesses, "I love you as a woman..." She initially refuses, saying that it's not right for a mother and daughter to do this, but she gives in to her son's enthusiasm and gives in, saying that it's just for today. Kaori transforms from a mother into a woman as she experiences the pleasure of being a woman for the first time in a long time. This is an incest story in which their twisted love opens the door to a forbidden relationship after repeated encounters.