Familiar AU angst hours: I know I said that hunger makes demons weak and vulnerable, but what if it makes them revert back to a mindless state? The longer they go without consuming a soul the closer they are to becoming the feral monsters that they so look down on.
And ever since he became Ciel’s guardian Sebastian hasn’t made a contract with anyone, what with all the time consuming work that comes with caring for a young child. Of course, since demons are immortal they can go years without really starving, but the thing is Sebas had already been a bit hungry when he first found the child. Sure the prospect of raising a little human and gaining his trust so that he’d later decide to make a contract with him sounded fun, but years go by and the Phantomhive boy still doesn’t mention it.
Conflicted, strange feelings start swirling around inside Sebas. While he does care for the kid and even feels protective of him (in his own demon way), he has never stopped viewing him as a potential meal. But if the kid never offers him his soul, does that mean he should just leave? If Ciel grows up and doesn’t need help and guidance anymore, why stay? Saving him and keeping him alive was just an experiment, right? Right?
To make matters worse, he starts to worry when he finds himself often fantasizing about the flavor that the past trauma has added to the young soul. He’s always been a patient calm demon, so what’s going on? Demons can also smell souls, and Ciel’s is mouth watering, oh how he’d love to open up his jaws like a giant wolf and swallow him whole.
Oh no.
He’s losing his mind. He hasn’t even gone looking for souls of dying people all this time, as that goes against his aesthetic. And of course the idiot bastard hasn’t talked to anyone about this. Which is why he doesn’t know Ciel has been studying demonology behind his back, knows everything about demons and contracts and actually plans to make a contract, but what he wants is for Sebas to be his familiar, which means he’ll be bound to him until he dies of old age (the little shit does view him as a parental figure but also wouldn’t mind having a demon by his side to help him gain power and smite his enemies, boys amirite?).
I haven’t fully decided how the story goes from here, but maybe it gets to a point where hunger overcomes Sebas for a while and Ciel has no choice but to confront him and forcefully bind him with the knowledge he has acquired, maybe also with Agni’s help (they have met Soma and Agni by now, more or less at the same point in time as in canon). After Sebas has calmed down, Ciel makes a promise: if he stays with him all his life and becomes his sword and shield, he can have his soul in the end, effectively making him a familiar demon; and in the meantime he can take the souls of any enemies they may kill whenever he gets hungry.
Tl; dr: Scrawny Victorian orphan catches demon like a pokémon.
#not-eli's-art #eli-rambles #text-post #au #kuroshitsuji #kuroshitsuji-au #black-butler #black-butler-au #sebastian-michaelis #dadbastian #ciel-phantomhive #our-ciel #ociel