exiled prince: i'm the unexpected extra in the novel

"If life gives you lemons, make lemonade"

Author’s note: The main character is neither reincarnated nor transmigrated.

Author's Note: Since this is the first novel I’ve published,don’t expect a perfect masterpiece. Still, I believe I’ve managed to create a good story.

Sorry guys, the author is too lazy to write a long explanation.
In short: the main character is a cursed child whose story will change the fate of the entire world.