We secretly installed hidden cameras (both fixed and ceiling-mounted) in a supposedly legitimate men's massage parlor in Tokyo, in collusion with the store manager. The establishment supposedly had strict rules against touching or sexual activity, but... the massage suddenly became increasingly suggestive and explicit. The therapist's massage techniques were so provocative that the man's penis became so hard it seemed like it would burst through his underwear... The therapist's hand even touched the man's penis while massaging him...