Two Supreme Experts in One Family from the Start: Me and My Brother

(I'm no good at writing introductions, so please just read the story.) This book focuses on everyday urban life. In the city, they're friendly and harmonious Kamen Riders, Armor Heroes, and Ultramen. On the Continent of Kings, he might be Uchiha Madara, the Demon King Oma Zi-O, or a Super-Overcoming Envoy. In Framed for Victory, they're a rabbit and a fox who coach a team. In Boonie Bears, they're the best friends of two people and a bear. In Marvel, they're a little golden man and a little cape. In God of Drama, they're some cosmic cops who have nothing better to do than roam the universe. What? Every world has restrictions? The urban world doesn't allow anything that doesn't fit in? But it's perfectly normal to have Kamen Riders in the city, right? And having divine ways in the city is perfectly normal too, right?! We've already got Kamen Riders and divine ways. Surely adding an Ultraman isn't going too far? (All-Heavens + a mostly useless System + brotherhood + no female lead + everyday urban life.)