I transferred to a school that was an all-girls school until last year, so naturally, the school trip was all girls! To be honest, I felt uncomfortable... And the bathroom was mixed, to my surprise! I managed to keep my distance and hide my lower body, but the girls kept getting closer! They even ripped my towel off and tried to get a direct look at my dick! I pleaded, "Wait! Stop!" but they took my towel away. And my erect dick was completely exposed. The girls' expressions suddenly changed! It seems I have a big dick... And the girls started looking at me in a sexual way! This was a super development I could never have predicted, and more and more erotic things were happening! In the bath, in the room... they just wanted me to insert my big dick. To be honest, I was exhausted.