Kosaka and Miura had been far removed from romance. The two were bound by a friendship that transcended the boundaries between men and women, and were in a relationship where they were open about the ups and downs of their lives, even sexual matters. They went out drinking with friends at home, but in the end, it was these two who stayed until the end. They weren't even aware of it, but something unexpected happened that made them test each other...!?
