[HMN-711] On the train to school, my classmate, Mr. Perfume, secretly lets me cum inside her. (Censored)

Every morning, I commute to school on a packed train, taking an hour each way. Spending every morning surrounded by old men and spending it on the train filled with their smells was unbearable. However, one day, that all changed - I was swept up in the crowd and pressed up against a girl in my class, Kousui-san, who I didn't really talk to much. As the train shook, I accidentally touched her butt, which was so soft that my penis became super erect and I was found out. I prepared myself for social death, but Kousui-san said... "You can cum inside me"...!! ? What? ? From then on, I started having sex with her every day, both on the packed train and after getting off the train -