Demon: You're unscathed by the genesis magic that humans cannot use huh?
MC: *Uses genesis magic*
Demon: Welp, I lost, peace out. @mage_goo Technically the full wish is "Kill the criminal who put me in this disgrace. Kill the guy by the name Fulio." so by specifying the name, he covers his ass there.
Here's hoping that after he slaps the shit out of that genie he goes back to the castle and slaps the shit out of that fake hero.
This is why you clean up after yourself when you beat someone the first time. So that people don't die from your lack of decisiveness. Not making a choice is also a choice.
"Kill the criminal who put me in this disgrace. Kill the guy by the name Fulio." I wonder if it can be interpreted as two wishes, so the demon stays a bit after the next wish, and when the guy tries to make the last wish, she's like "NOPE" just to see his face.