Trade

A young, low self-esteem, and lack of confidence (Y/N) was born as a noble of the Vanguard Family. After her father passed, the one who loved her, her biological mother married a man from the Bristle Family. After giving birth to Markus (Y/N) was broken down and stripped from her title and royal noble status, she was turned into a maide.

The Bristle Family traded (Y/N) to work for Big Mom as their maide. In return they get both protection and fair shared wealth.

The only problem is that your step-father never mentioned that you were his step-child and that you were basically a child maide...