[Anime] Kekkai Sensen

A breach between Earth and the netherworlds has opened up over the city of New York, trapping New Yorkers and creatures from other dimensions in an impenetrable bubble. They've lived together for years, in a world of crazy crime sci-fi sensibilities. Now someone is threatening to sever the bubble, and a group of stylish superhumans is working to keep it from happening.

{(Source: ANN) and then Ctrl V'ed by me off of MAL}

In eps 2, she said that she's a ghost, yet other people than Leo can also see her and interact with her (end of eps 5, she talked to one of the doctor). I don't think she's lying about it, though. I believe she's a ghost that possessing someone's body (in this case, the original 'White' girl). This based on how she reacted on Leo's photo about certain graveyard in eps 2-3. Given that she's confined in hospital since 3 years ago, I assume original White has some serious illness that make her doctor forbids her to leave the hospital (whether her illness has been cured or not when "ghost-White" possessing her, can't say).

He appeared first at the end of eps 1, then met both Leo and White in eps 4, and met up with Fehmt in eps 5. In eps 6, he appears to have good relationship with White, in contrast with her reaction to him at eps 4. Based on that and how he said that he never met Leo in subway before (eps 4), I think he's the same as "ghost-White"; a being that possessing human's body for some reason. His real body is that red-eyed blondie in blue coat that appears in OP&ED song. I think he's kinda different than "ghost-White" since he's one of the Kings, though (this also emphasizes of why White cried when watching movie with Leo at eps 5. Now, unlike White, character/personality of original Black seems intact and appears when King of Despair is not taking control of the body, hence why he doesn't remember about Leo and also explain why White is not acting cold toward him in eps 6.