One day, when two long-time close friends were dining together on the weekend, they got drunk and became a lively topic of discussion. Recently, a hot topic on social media is 'couple swapping', a method to eliminate the lack of intimacy. The two groups excitedly decided to try cooking and watching movies together, and they could connect just by holding hands. The first couple swapping event has ended, and next time we will swap couples during the hot springs trip.