IPX-939 For the Sake of Protecting Her Little Brother, Beautiful Big Sister Minami Aizawa is Imprisoned by a Vile Old Man, Repays with Her Body, and Turns into a Meat Toilet in a Life of Superhuman Ejaculation Over Ten Days - Minami Aizawa

To protect her younger brother from a debt crisis, beautiful older sister Aizawa Minami voluntarily offers her body to a depraved old man to repay the debt, only to be imprisoned and turned into his exclusive sex toy. The old man possesses superhuman stamina, subjecting her to relentless, brutal violations day and night—from morning till late evening—for ten straight days without respite, ejaculating nonstop. Aizawa Minami breaks down mentally and physically under extreme sexual abuse, yet gradually succumbs to endless pleasure, depicting her descent from resistance to submission.