You and your best friend have randomly gained superpowers. Your best friend had the power of light, and you gained the power of dark.

friend: „I can’t believe that we finally got superpowers!“ you: „I know! isn’t this awesome?“ friend: „Check this out, I’m pretty sure that i control light now! What did you get?“ you: „I don’t know for sure, but it looks like i control antimatter.“ friend: „Dude, this is gonna be so awesome, i can’t wait to start saving the world together!“ you: „I know right? Um.. but actually, what do you mean by saving the world?“ friend: „You know, we’re superheroes now! so we should like use our powers to fight crime, and save the world!“ you: „But the world doesn’t need saving, it just.. needs to be fixed.“

. . .

friend: „No..“ you: „You’re in my way.“ friend: „Please.. you don’t need to do this..“ you: „And you don’t need to stop me.“ friend: „Yes! I do!“