Konatsu and I are childhood friends who grew up in the countryside and have been dating, but Konatsu hates the countryside and longs for the city. One day, a man who is Konatsu's cousin, though she has never met him, comes from Tokyo and says he will be staying at Konatsu's house for a while. Konatsu looks at him with admiration, even though he seems frivolous and lives in Tokyo. I got into a fight with Konatsu, who shortened her skirt, probably because of him, and we went on a family trip. When I came back, I was shocked to see how my innocent girlfriend had changed.