Kuro AU where little OCiel is so sick that he probably won’t have another birthday. In their desperation and after running out of options, Vincent and Rachel turn to forbidden practices and try to summon an ancient demon in hopes that it will save their child. However, they end up summoning a demon that is very battered and weak themself after a previous encounter with another powerful demon. They can’t do much for the child in this state so they offer the parents a deal: instead of accepting a sacrifice, they’ll possess the child and lend him their supernatural powers to strenghten his body and keep him healthy, and in turn the child will provide them a vessel to help them rest and recover. But they will be bound permanently, meaning that even when they recover they can’t stay too far away from each other.
Vincent and Rachel accept and so demon’s and child’s fates are sealed.
The demon thinks this isn’t exactly an ideal situation but it could be worse, they just didn’t want to die. The child is ok, after the initial freak out he slowly gets used to having a horror beyond comprehension inhabiting his body, even starts to curiously experiment will all the things he can do with his new strenght. He directly addresses the demon, more and more often, does this child have any idea who he’s talking to? And why does he talk to them like they are best friends? The audacity! What do you mean? Of course the demon starts to look after him only because they are bound by contract and nothing else! No, they do NOT find similarities between him and a kitten.
Little Ciel recovers and grows up into a healthy young boy, then into a fine gentleman. People who have gotten to know him personally share rumors about the strange aura surroundig him, how he’s so smart, talented and successful but also uncanny, as if he wasn’t entirely human, even getting the feeling that when he talks, they could swear they hear two people talking at once.
#not-eli's-art #eli-rambles #kuroshitsuji #kuroshitsuji-au #black-butler #black-butler-au #ciel-phantomhive #our-ciel #ociel #o!ciel #sebastian-michaelis #dadbastian #mombastian 
[BITES YOU]🎨📷🔞