A perverted girl heads to a male masochist's home as a delivery staff member, creating an unusual and intense scenario. This time, four special courses are offered: 'Crash Course,' 'Anal Training Course,' 'Male Ejaculation Course,' and 'Holy Water Course,' each delivering unique stimulation and extreme pleasure. Designed to satisfy men with deviant tastes, orders from dominant males are not accepted. At the end of the day, 'Lady Rei' grants ultimate satisfaction through final release sex. A rare and exciting work where 'Rei Mizuna,' normally playing the M role, takes on the dominant S role, showcasing a thrilling transformation.