Sagawa, Maki's former boss who had looked after her husband when he was a new employee, came to Tokyo for a class reunion and was staying with her for two days. Her husband was obsessed with his work and had no interest in Maki, who wanted to have children. Feeling lonely, Maki was taking a bath late at night when Sagawa came in without knowing anything. They both stiffened in surprise. However, Sagawa's penis stiffened even more than the surprise and he couldn't hold it back and embraced Maki. Then, Maki, flushed by the warmth of his penis and the heat of the bath, accepted Sagawa...