"This 14-year-old is the most powerful person in the WORLD but really... he just wants to be a normal middle schooler...!" is absolutely not new to anime but USUALLY it's all a power-fantasy. It's humble-bragging. It's an awkward marriage of relatability and bus-window-day-dreaming. "Oh MAN, I just SAVED the WORLD 😱😏🌍💥but I still have a MATH TEST tomorrow 📏✖️AND I have a CRUSH 😊 (who doesn't know I'm the coolest badass in the world because that's a secret!! 😜)"
Which is all to say once again that no one is doing it like Mob Psycho 100. Because Mob is unambiguously the most powerful entity in the world and he goes "Okay but that's not very interesting. Being powerful isn't a personality. I'm gonna try to improve myself in ways that matter."
The evil spirit on his shoulder spends all series going "PLEASE IM BEGGING YOU TO TAKE OVER THE WORLD!" and Mob says, "No thank you. Do you want to help me with my math homework?" and the second most powerful person in the world comes up to say, "We are a supreme species of super-human better than everyone else!" and Mob says, "You sound stunted as a person. Maybe try working a customer service job?" and a classmate will go, "Why not use your powers to be popular?" and Mob says, "Psychic powers don't make you popular. Do you want to see me lift this 10kg dumbbell? I've been working on that."
