Kozue had doted on her son so much that before she realized it, they had become involved in a relationship. Now living apart, the two had planned a trip to a hot spring, thinking it would be a mother-son getaway. They were supposed to have a passionate and intense time together after a long separation. However... Upon arriving at the inn they had chosen, Kozue invited her son to the open-air bath, eager to touch him. In the open air, they washed and caressed each other. The atmosphere heated up, and Kozue received her son fully within. After enjoying a thoroughly satisfying time, as Kozue walked down the corridor, she was suddenly stopped. The person who stopped her was a detective, hired by her suspicious husband to investigate her affair. Flustered, Kozue faced the detective, who smirked and said he would keep her secret if she listened to him. Teasing her, he exposed her lower body, forced her to take in his semen, and then spilled it all over her...
