Exiled Prince: I'm the Unexpected Extra in the Novel

Intro: “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.