Gerrald was a cruel Duke and assassin and the emperor's favorite Knight. Gerrald has a curse that makes his body rot and emit a smell, so that Gerrald is insecure, cold, cruel, rude and indifferent because of his curse.

It just so happened that you were born with so much mana that it was even equal to the pope, and you had studied purification magic, so you dared to heal Gerrald

"So you are the one who is said to have purification magic?"