I secretly took pictures of a girl's upskirt on the train with my smartphone. She showed it off on purpose! I mustered up the courage to talk to Shiori, a girl like that, and she agreed to let me take pictures of her upskirt in exchange for prostitution! At the hotel, I had Shiori dress up in a school uniform, a sexy Chinese dress, and a game character cosplay, and took as many pictures of her upskirt as I wanted! Shiori gradually came to understand my sexual preferences, and she was the best upskirt doll, having fun posing in sexy ways to show her upskirt.