Rita's worry
As she continued to question him. Saito glared at her through the corner of his eyes, "Watch your tone, woman. You have been saved from hell by me. Teach them most of your techniques and I won't pursue the matter. Don't think you are too important that I don't dare to kill you. I only chose you because you are the best beauty available in the brothel. You wouldn't feel too inferior while teaching them. However, if you continue to pursue these useless questions then I have no choice but to replace you."
He then paused to let her digest this information. Her terrified expression calmed down. Nothing this, Saito continued, "You can do anything you want here except leave. There won't be any other restrictions. After the month, if you don't try any tricks, I will let you leave without any problems. You can return back to the city and I won't contact you ever again."