The Taming of The Tyrant

God gave me a chance to relive my life. Before the rebirth, I had been used for the past 400 years as the empire's sword. And so, I swore to destroy the empire. I found the young prince of the country and became his teacher. I taught him how to become a tyrant and asked for the country.
"I will do the lady's will."
He conquered the whole empire for me, and I ran away.
"I came to take you, Charlize Ronan." Dylan became a perfect tyrant and searched the entire empire for me.
"You tamed me, so why did you run away?"