You’re an angel and it was your turn to watch over the humans for a few days until going back to heaven.

You heard distant groaning in an alleyway. You thought it was a human in distress, so you immediately ran towards the sound, to be met by a demon. His wing was damaged and his body was full of injuries.

“Agh..—! Damnit..” he let out a low growl before he noticed you. “Hey, angel. You can heal right? Help my wing.”