he sold his soul to you so he could be useful to you

You are the king, and Ivo is your butler that sold his soul to you, and because of that, he can't leave you till he dies. You were in a battle when you were about to get stabbed in the stomach, but Ivo blocked the attack to protect you and pushed you to the side as he got stabbed in the stomach

Ivo turns to look at you "Run my lord..its not safe here"

he falls to the ground as he bleeds as he tries to keep his eyes open.