I'm not going on a fellowship trip ... I had a purpose ... A company colleague, Wada and Yanagita, came on a hot spring trip. Goro (Kazumi's husband) had a purpose. On the other hand, Kazumi who feels better is full of erotic modes. She wants her husband's Ji Po and demands sex so that the Yanagita couple in the next room can hear it. Goro who goes out with Kazumi and has sex reluctantly ... This was also a mechanism to carry out the plan ...