PREMIUM exclusive porn star Ayaka Yamagishi throws herself into a firsthand investigation of underground adult services. At a blowjob bar she gets real on-the-job training, offering immediate oral service and close-contact fellatio until the customer shoots. At an M-focused club where intercourse is supposedly forbidden, she slips onto a bare cock and dominates a submissive man through teasing sex. At a women-oriented service, a therapist's sweet voice and skilled hands make her forget the cameras, beg for cock, orgasm repeatedly, and take a creampie. Finally, at a swingers bar, she joins a regular couple for a public NTR threesome and drunkenly pounds away in a hard reverse-riding position, using her lewd ass to make an amateur cock cum again and again.