Married Slave Strip Theater Sister Wives Scattered on the Dark Rape Stage

My older sister, Minami, is burdened with a large amount of debt. My younger sister, Luka, was made a joint guarantor. One day, Luka is forced to watch a video letter by men in black who come to his house. What was captured in the video was Minami, her older sister, being brutally raped in front of her husband. Minami is said to be imprisoned in an underground organization due to debts. Luka is also taken away by the men and reunites with Minami in a fishy basement, but there is a stage filled with madness filled with applause, cheers, and the roars of the men.