Business trip accompanied by mistress ~ Affair copulation ~

Although she is loved by her husband, Nana is unsatisfied with something, and in order to find that something, she has an affair with a man named Sasaki. They always meet at night... Nana is fed up with such an uncertain relationship, but one day, Sasaki is going on a business trip to the countryside and is ordered to accompany him there. Sasaki and Nana openly interact with each other at a resort on a business trip that overlooks the ocean. However, Nana comes to know Sasaki's true intentions on this business trip. She is told to participate in a business meeting disguised as Sasaki's secretary...