is ciel a demon

Yes, Ciel does become a demon in the manga.

Yes, Ciel did become a demon in the manga.

Yes, Ciel does turn into a demon in the manga.

One possible plot could be that Ciel is forced into a situation where he has to make a deal with a powerful demon. As a result of this deal, he gradually starts to transform into a demon himself. He might struggle with his new demonic powers and the dark desires that come with it.

There's also 'Demon Ciel's New Adventure'. This one focuses more on Ciel's transformation as he starts to embrace some of his demonic powers. The crossover aspect comes in when he meets other supernatural beings from different fictional universes. It's an interesting read as it shows a different side of Ciel that we don't often see in the original story.

Maybe the main antagonist is a group of demon hunters. They sense Ciel's transformation into a demon and see it as their duty to eliminate him before he becomes too powerful. They hunt him down relentlessly, making Ciel's life as a new demon very difficult.

In fanfictions, Ciel's character development can be shown through his growing understanding of the world of demons. As he spends more time with Sebastian, he may become more aware of the true nature of power and the cost of his revenge. His relationship with other characters also plays a role. For example, interactions with his servants might make him more empathetic or, in some cases, more callous as he tries to maintain his position of power.

As time goes on, Demon Ciel could develop a more complex understanding of the demon hierarchy. This might lead him to seek more power within the demon world. He could start to manipulate other demons to his advantage, using his wits and newfound demonic abilities. His relationship with Sebastian would also be a key factor in his evolution. If Sebastian were to face a threat, Ciel might have to step up and show a side of himself that is more protective and assertive in the demon realm.

In such a situation, Ciel's sense of self might be affected. He could start to question his identity as a demon and a former human. This internal struggle could make him more vulnerable. He might isolate himself from those he cares about, like Elizabeth. His relationship with Sebastian could become strained as Sebastian tries to figure out how to help Ciel. It could also lead to Ciel exploring new powers or abilities that he didn't know he had, which could have far - reaching consequences for the entire Black Butler universe.

The plot could center around the mystery of how Ciel turned into a baby demon. There could be a search for a way to reverse it. His allies, like the Phantomhive servants, would be in a tizzy trying to keep him safe and figure out what happened. Ciel himself, despite being a baby, might still have some of his old memories and try to communicate in his own baby - like way, which could be really cute yet frustrating for those around him.