Quin raised her son single-handedly. Her son safely graduated from university and found a job. She thought that was the end of child-rearing, but... The company Kojiro joined was an extremely black-hearted corporation. Weekends were practically non-existent, and Kojiro's physical and mental health deteriorated rapidly. Seeing Kojiro like this, Quin became worried and lied about her father passing away to take him on a hot spring trip for a change of scenery. During the trip, Quin saw her son's naked body and felt desire for him...
