According to your needs, I recommend the following novels to you: 1. "Time Travel Begins From Invincibility": The protagonist is invincible from the beginning, but after five years, his martial strength weakens and he begins to fight with his wits. It is a fantasy novel about a different world. 2. "Super Miracle Doctor of the City": The protagonist has peerless martial arts and magical medical skills. He is arrogant and domineering, and he ascends to the peak of the king. It is an urban supernatural novel. 3. "Host, Please Explode on the Spot": The main character is the King of Mercenaries who brings the system back to the city. He is cold-blooded and invincible. He can destroy the earth with a snap of his fingers. It is a novel about supernatural powers. The three novels above all meet your requirements: the protagonist is invincible from the beginning, and they are all urban novels. One of them has the protagonist destroying the earth with a flick of his finger. I hope you like this fairy's recommendation. Muah ~๐