A girlfriend who frequently visits the M-themed brothel is punished by her jealous boyfriend by being forced to watch her seduce strangers and have sex with them, a form of reverse NTR masturbation. (JOI's experience: Yayoi Mizuki HMN-504)

A new sensation! JOI's NTR perspective video! "Weren't you secretly going to participate in M-Sex? I'm being envied..." Her prostitution has been exposed, and now she's facing revenge with NTR! Seducing her with sexy eyes and lewd words, she sees another man's penis right in front of her, becoming a nymphomaniac, and enjoying sex while you witness their pleasure! The lewd JOI makes his penis erect, but instead of letting him penetrate, they let him watch their ejaculation sex—this is the pinnacle of a mentally masochistic world!!