MKMP-518 On the first day of work, she was raped by the manager

My sister has been contacted by the company where she works in the consumer finance sector and decided to quit her job. The reason is that my brother, who lives with us, has incurred a large amount of debt. However, my sister continues to work like a robot at a convenience store to pay off my brother's debts. The overwhelming debts and fatigue gradually wear down her spirit, and when everything becomes meaningless, my sister becomes a convenience store saleswoman who is involved with anyone, anywhere.