A nasty slut delivery staff has a training tool and delivers it to M man's house. The courses you ordered this time are 4 courses of "crash course", "anal development course", "male tide launch course", and "holy water course". Any pervert is welcome! S male customers are not allowed. And at the end of the day, 'Rei-sama' desire relief SEX. This is a valuable work where you can see the slut (S role) of 'Mizuna Rei', who usually has many M roles!