The final battle between the hero and the overlord is televised, and during the broadcast, the overlord makes valid, reasonable points about the need for a ruler who knows how to rule and how the hero would be a terrible king. The hero wins the fight, but the overlord’s words hold in people’s minds, and they kick the hero off the throne within the first month of his “rightful” reign.
After defeating an evil overlord or some other big evil thing, the hero decides to prevent evil from popping up again by attempting to erase any information about the previous evils. So he censors writings that take the villain’s side, destroys written records of what happened (save for his own journal), and silences the bards who try to spread the story.
However, a new hero pops up and decides all this silencing and censorship is evil, and so goes on a mission to find and reveal the secrets being destroyed to the entire world.
A hero who writes a prophecy about himself to make himself more important than anyone else, and peacefully dissuades those who deny it. He lives his life fulfilling the prophecy, and is actually able to topple a questionably corrupt ruler because the ruler believed the prophecy.
A tax collector decides he’s fed up with taking money from people to give to a reasonably corrupt king. He brings the citizens’ tax money back, but gives them twice their payment from the king’s own fortune.
Things go pretty good for some time, and suddenly the king is completely broke, and the kingdom is bought out by a bigger one, all because the tax collector took justice into his own hands.
Feel free to alter any part of this.
At some point in their lives, everyone has a theme song composed for them, which plays via some sort of magic whenever they dramatically enter a room or do something cool.
A character whose job is to go door-to-door selling things that people don’t want. He learns how to make people feel like they need this junk, and then successfully convinces the hero of prophecy to buy a completely useless, but good-looking sword for his final battle.
A sentient species with several extra organs that can be transplanted relatively easily, but has a prominent culture wherein they rarely, if ever, consent to organ donation.
A mafia-like organization that engages in no crime, but has families and wears nice suits and also donates a lot of money to charity and helps out social movements.
Every 1000 years or so, people go through a Pokémon-style evolution of sorts and gain better abilities like sight, run speed, jump height, cognitive power, etc.
At age 5, kids are given an animal that will grow with them to become super awesome at whatever the kid wants.