The Magician and His Cat

"Hahaha, I am the Immortal Dark Knight, the Eternal Sage of All Laws, the Mobile Great Library, the King of Stars, and the God of Alchemy. Now, I am returning to the land that abandoned me. Are you ready?!" A certain boy convulsed. "Hey, I'm hungry. Where's the fish?" A certain black cat jumped on the boy's head. "Okay, I'll do it now!" It's not a dark style, it's just a relaxed style of complaining about a former strong man who leisurely worked as a teacher on the mainland, breaking into ruins and saving the world.