Concept: An AU where everything but Mammon is missing and doesn't turn up till later on in the story either as an angel or demon
He then later appears in the Human Realm around season 3 possibly around the beginning or in the middle of the season
Description: after living with the brothers you find out that Mammon has been missing during the Celestial War and it caused the brothers to wonder if he's even alive at all.
It's been eating Lucifer alive for thousands of years and it mainly hurt Belphie even more since losing Lilith and that he loved Mammon a lot
Story Rating: 7/10