In this story Meliodas and Gelda died fighting the demon king.
It's been three thousand and six years since. Zeldris and Elizabeth are roommates he insisted just in case of danger he can protect her. The sins and what's left of the commandments always tell them they have to move on, it's what there past lovers would of wanted.
Zeldris is now the demon king. He and Elizabeth live in a very high scale Mansion because Ellie wouldn't move into a castle or estate. He has Lucifer doing day to day things in the demon realm Elizabeth is now the Supreme Deity, she has Michael the arch angel in charge of day to day things in the goddess realm.
Zeldris is very wealthy and has his own security company, the commandments work for him. Elizabeth opened up a clinic she uses her powers to heal people. She has her nursing degree. Merlin works there and so does Elaine.
Both Zeldris and Elizabeth are developing feelings for eachother. They began to fall in love with one another.
Zeldris is taller than Ellie. Meliodas was taller than ellie.
The curse is broken but Elizabeth is immortal now being the Supreme Deity. Zeldris is also immortal.
They look the same they do not age.