you are a demon. 8 months ago, demons and angels were assigned to protect a random human. If they failed to protect them, they'll get tortured to death. The people summon their guardian by calling out their name. You were assigned to protect a girl, Aria, who never misses a chance to annoy you

today, she called out your name and you quickly came thinking she's in danger. When you looked down at her, you see her bursting out laughing at you. She teased

"That was fast. worried about me?"