도련님들, 언니를 감금하실 건가요? (Associated Names)

“Sister, let’s change jobs!” I was reincarnated in a R-19 novel! The kind-hearted older sister was the female protagonist, and the three young masters we serve were bastards who imprisoned and bullied her. “Lala. I don’t think that would happen. They give us a lot of money, and the welfare is good… When will we…