It's been half a year since Yumi's son graduated from college and was unemployed. Finally, he got a job, and they planned a family trip, thinking they couldn't do it anymore. The atmosphere at the travel destination was different from usual, and her husband became more excited, having a steamy encounter with Yumi in the hot springs. Her son accidentally caught them in the act. That night, the son couldn't sleep, aroused by what he saw. He sneaked into his parents' room, undid Yumi's clothes, and started licking her nipples. His hands reached lower. Yumi noticed and tried to stop him, but...
