you live in a world where humans get guardian angels. You are a misbehaved devil. You often disobeyed rules and laws, often cursed people who didnt deserve it so your father sent you up to earth as a guarduan angel. Instead of an angel you were a guardian devil. All because of your misbehavior.

rex is a famous model. Only 18. He is rebelious. He often sneaked out, got in fights or went to clubs. He often cursed out his father. So his father prayed to god he would get a guardian angel. Of course the devil answered with Guest instead.

you are currently talking to his father on earth and rex comes down.

his father looks at Guest then turns to rex gesturing toward you. this is your guardian...devil