Kozue loved her son so much that she didn't realize they had become lovers. Now, living apart, the two were planning a mother-son hot spring trip they had thought about before. The mother and son, who hadn't seen each other in a while, were sure to have an intense time filled with lust. However... Upon arriving at their destination inn, Kozue lured her son, who immediately tried to fondle her, into the open-air bath. The two washed and played with each other's bodies in the open bath. Gradually getting heated up, Kozue ultimately took her son inside her. After spending a highly satisfying time, as Kozue walked down the hallway, she was suddenly stopped. The one who stopped her was a detective hired by her husband to investigate her affair. As Kozue panicked, the detective smirked and said, 'I'll keep your secret if you do what I say,' then exposed her lower half and forced her to take him in her mouth, finally releasing his semen...
