That JAV

Muto and Yuki, who work at the same place, have an affair in which they secretly seek each other's bodies without being seen. They both have families and are unable to see each other freely, but they share the same dream: "Just once, I want to forget everything and go on a hot spring trip alone with my partner. "Just once, we want to forget everything and go on a trip to a hot spring, just the two of us." To fulfill this desire, they planned an affair trip called a business trip several months in advance. On the day of the trip, the two meet up at the station, change out of their suits and into casual clothes, board the bullet train in high spirits, and as soon as they arrive at the inn, they begin to fiercely compete for each other's lips...