OYA NI URARETA WATASHI NO SHIAWASE NA KAZOKU

Oya ni Urareta Watashi no Shiawase na Kazoku summary:

Sophia was sold by her parents for money and fell into slavery. As a slave, she was bought and sold by multiple masters, ending up with William, the head of the Aldridge family, who was notorious for being a sadist. Imagining the horrific situation that would await her, Sophia vowed to stand up for herself, but when William reached out his hand, it was filled with warmth and kindness.
The story of how an unhappy slave girl finds happiness with her new family.