I transferred to a new school and moved into the dormitory, but the boys' dormitory was under renovation, so I ended up staying in the girls' dormitory. My classmates would come into my room without permission and relax, so I could see their panties all the time. Even while cleaning the dorm, they would shake their skirts and I could see their panties all the time. I could see the girls changing clothes, so my crotch was always erect. And I even got to do some naughty things.