"I'm done being a marquis's daughter!"

When I was seven years old, a girl a year younger than me came to live in our house. She was a child my father had with a woman outside the family, and my mother treated her harshly while my father barely paid her any attention. So I took it upon myself to ensure she could eat properly, to prevent the servants from gossiping about her, to see that she received an education, and to dress her appropriately as befits a marquis's daughter—I made various arrangements for her benefit. But apparently things were different from her perspective. I was the cruel older half-sister who had oppressed her. After the prince broke off our engagement and my half-sister betrayed me, I snapped. Fine then—I'll quit being a marquis's daughter and live as a man instead!