The Nephalem Child (Good omens)

After Armageddon had been stopped and heaven and hell were in disbelief that Crowley and Aziraphale lived through things, hellfire and holy water, that very well should have destroyed them they lived peacefully. Until a particular Tuesday, when a baby who was definitely not human appeared on the steps of A. Z. Fell and Co.
That Tuesday marks the day they found Erestel, a half-angel half-demon baby that had features that looked like a mix of the two.

(A/N) Only the story, cover, and Erestel are mine. Anything and anyone else belong to their respective makers, creators, writers, and whomever brought/thought them up.
Enjoy.