The Man Who Not Laughs (Dc x male reader)

Y/N was just a normal 16 year old teenager who lived in his apartment, until one day he ends up being invaded by the Dark Knight and the Clown Prince of Crime, which makes Y/N then kill the Clown Prince of Crime in self-defense, but he realizes that this would change his life completely when he starts to see the clown himself in bizarre illusions, with him realizing that he infected him with a virus that is making him more and more like him, and to make matters worse, all of Gotham wants his head, so Y/N then decides to solve this by taking the clown's place, by gradually becoming a physical copy of him, but with the only difference he doesn't laugh.