I'm a gloomy loner, and I saw a girl on the rooftop who was super beautiful and smart, but didn't talk to anyone, so she was an outsider in class. I was curious and looked at her, but the strong wind made her panties flash several times, and I got an inappropriate erection! I thought she'd find out and get angry, but she shyly held down her skirt and fidgeted with her legs, saying, "You just want to do it with me, don't you?" Maybe she was excited by my erection, but for some reason she invited me, so I couldn't miss this lucky opportunity and did it!