A hidden camera secretly records the application forms, interviews, showers, and hands-on intercourse training at a brothel that encourages full service. The four adult applicants are Risarisa, a 20-year-old F-cup university student interested in soft BDSM and cosplay; Ai, a 21-year-old university student who masturbates whenever she gets horny and is sensitive in her nipples and clitoris; Rin, a 23-year-old F-cup dental assistant who masturbates almost daily and wants toy and bondage play; and Miku, a 22-year-old I-cup hairdresser and hostess who loves powerful vibrators and being dominated. Their sexual histories, preferences, masturbation habits, and sensitive spots are exposed before each interview moves into practical sex training.