The monster duchess and contract princess

As long as she could be loved, she wouldn’t mind being starved or beaten. However, when she was thrown to the fire as a sacrifice for her sister, her hopes were shattered.

“Adopt me.”

Leslie, who barely survived in the fire, went to the Duchess, who was looking for a little child to adopt as her daughter.

“No, because I know you’re the best dark magic user in the empire.”

“Leslie, come this way.”

“No, yesterday you ate with first brother, so today you should eat with second brother.”

“Leslie, I have your favorite jelly here.”

My brothers make a contest every morning, asking me to sit next to them. Hey, what is this relationship?