Lost Soul (Black Butler FanFic)
Sebastian was out doing an 'errand' for Ciel, when he saw a little black cat in a box, placed out on the street. Sebastian, without knowing what the cat truly was, took it to the Phantomhive manor. It was a cat demon, named Aria, a lost kitten, now found. Pluto, their pet, hates Aria and tries to attack her whenever he gets the chance, which angers Sebastian. When Sebastian sees Aria's true form, what will happen?