Aika, a female student, has her developed H-cup breasts and beautiful ass targeted by a pervert. From there, her hellish days begin, from which she cannot escape... Her breasts, which stand out too much on the crowded train, are vigorously kneaded from behind by the pervert! Her bra is pushed aside and her nipples are played with... She is so embarrassed that she can't even make a sound no matter what he does to her. "Miss, if you make too much noise, the other customers will find out," he says, and he forcibly inserts his penis into her from behind from the side of her panties!!!