A beautiful woman is completely restrained with legendary iron restraints handed down from medieval Europe. In this series, the protagonist is obsessed with her anus and is tortured relentlessly. This time, the victim is Natsuki Takeuchi, a slender beauty with a refined appearance. After she is stripped naked, her exposed anus is violated as much as the protagonist wants, before trampling on her self-esteem with deep throating, nipple teasing, whipping, and other methods to force her into absolute submission. Then, as the protagonist thrusts cocks and toys into her defenseless asshole one after another, the woman squirts over and over again as she climaxes between pain and pleasure...