Ruka Inui, a busty female student who commutes to school and completely falls into the clutches of a group of perverts (T-3800057)

Ruka is relentlessly groped by a group of men on a crowded commuter train. They take away her actions she doesn't like and play with her body and genitals. Even though she resists desperately, she can't bear the lewd stimulation of the erect penises surrounding her, and she experiences humiliating orgasmic spasms! Unconsciously, fear gradually turns into excitement... bathing in men's semen on the train, indulging in pleasure...