IPZZ-869 Substitute Companion: 10 Days of Confinement with an Endlessly Energetic Yakuza Boss Who Never Seems to Tire, Fujisaki Mai

A sister is held captive in the home of a relentless yakuza boss as collateral for her beloved younger brother’s debt, and is forced into servitude. Trapped in a cycle of constant pressure and demands, she endures ten days of confinement with a man who never seems satisfied. If I want something, do it right away. If I tell you to take it off, do it right away. You exist to serve me. Ten days of nonstop confinement, day and night, with no escape. A beautiful older sister, taken prisoner and forced to endure a painful, heartbreaking ordeal.