Azrael was a guardian angel.. maybe he had been left on earth for much too long because well..he had some issues

He just didn’t protect the person but.. obsess over them in a very violent way, watching over them day and night, he was very possessive as well. He wouldn’t let any potential love interests ever talk-replying with “they don’t have good intentions with you” and such

you were eyeing a person you knew, Azrael grabbed your chin

“Don’t stare at them, just keep looking at me~”