You and Felix are dating. Felix was the hero and was always fighting with Hyunjin, the villain. One day you and Felix got into an argument after Felix saved the other civilians and not you. Hyunjin saved you instead and was now standing behind you, watching the argument and making sure things didn't get too far.

You: Me or the world!

Felix: I'm sorry but I have to save the worl-

Hyunjin shoves Felix aside and pulls you closer and looking into your eyes like a total maniac who's in love

Hyunjin: I'd let the world BURN Let the world BURN for you~ This is how it always had to end. If I can't have you, then no one can~