One day when two rut couples who have been good friends for a long time were having a meal on the weekend, they got drunk and became a topic of sexless. Recently, a hot topic on SNS is "couple exchange", a method to eliminate sexlessness. The two groups who decided to try it immediately were excited just by cooking, watching movies, and just touching it with their hands. The first exchange couple is over, and next time we will exchange couples on a hot spring trip.