A current busty college girl forced to become a nude model

Mao is asked to use the professor's painting model in exchange for a letter of recommendation for the museum. He is told that he is "for the sake of art," and he hesitates, but takes off his clothes. She is in an obscene pose, and a completely naked model in front of her classmates. Mao is confused by the demands that gradually become more radical, but the shame of being watched and drawn from every inch of her body turns into excitement. "Teacher, I'm embarrassed... Ah, everyone is watching me..." A pure art school student shakes her big breasts and squirts and cums.