This work completely restrains a M woman with iron restraints handed down from medieval Europe, and thoroughly tortures only her anus. The sacrifice this time is "Nanami Yua". She starts training her from a state where she can't move in an embarrassing naked figure. A strong slap on her cheeks and boobs. When dicks, various toys, and pears of anguish are inserted one after another into the anus, it ends between pain and pleasure.
