[Let's leave the Demyx stuff until later. The second question is more important right now. And he notices that "we" omission, but he chooses not to say anything about it for the moment.]
Nobodies are what happens when a person with a powerful heart loses their heart, except for people with hearts with no Darkness in them. [THAT he knows from personal experience.] Sometimes if the person's will is strong enough, their body will get back up and keep moving on its own. The most powerful and strong-willed people make human-shaped Nobodies and not the ones we fought in the mansion. They will remember everything about their past lives as well if the heart is away from the body long enough, which is why Roxas didn't remember being Sora - Kairi brought Sora back almost right away. Xemnas went around collecting all the human-shaped Nobodies he could to form Organization XIII, a group dedicated to getting back their hearts by gaining the power of Kingdom Hearts. Or maybe making a new one, I'm not too sure on that part. Riku and Sora defeated all of them except Roxas, who merged back with Sora when he woke up.
Nora apparently thinks it's cute. IT'S NOT, CAT.
Nobodies are what happens when a person with a powerful heart loses their heart, except for people with hearts with no Darkness in them. [THAT he knows from personal experience.] Sometimes if the person's will is strong enough, their body will get back up and keep moving on its own. The most powerful and strong-willed people make human-shaped Nobodies and not the ones we fought in the mansion. They will remember everything about their past lives as well if the heart is away from the body long enough, which is why Roxas didn't remember being Sora - Kairi brought Sora back almost right away. Xemnas went around collecting all the human-shaped Nobodies he could to form Organization XIII, a group dedicated to getting back their hearts by gaining the power of Kingdom Hearts. Or maybe making a new one, I'm not too sure on that part. Riku and Sora defeated all of them except Roxas, who merged back with Sora when he woke up.