We all know that Nobodies have the abilities to grow hearts right? (Roxas, Xemnas, etc.). let's just say Roxas was in the physical world again/saved from torment. What would happen if he lost his new heart to darkness? Will he have a heartless? Will a nobody form? If that's true, then that nobody would be the nobody of Roxas, who's the Nobody of Sora, like an inception kind of thing. Will the Nobody still be considered Sora? (considering he still uses Sora's body, and has not gained his own).