Role reversal: blackmailing my annoying sister-in-law for 3 days of servitude, turning her into my personal creampie pet 立場逆轉抓住討厭義理姊姊的弱點，3日間成為專屬中出性處理寵物…雖然說著不過還是用輕蔑表情服從著我的指示…