The destination that was pushed by a crowded train reached in front of the super-type female students. Also, if you move your body a little, it will stick to each other so that you can wake up. I try to escape because I think this is bad, but the back is

A super type of female student who happened to meet on a crowded train. The crotch, which has become so close to her, is pressed more and more by the surroundings as if to escape. She is also estranged by the dubious sexual intercourse between the hips she rubs at the train shake, and develops into a real sexual intercourse. It's like the erection that makes a woman feel like this!