[Bless this boy for not taking it in a weird way.]

Uh- Yeah! A Nobody is someone who is half of someone else! [Sora... Explain this better.] When someone loses their heart they can split into two. One is the Somebody and what was left behind is the Nobody.

[!!!]

It just sounds a lot like that. Someone who's only been awake for a little while even if you look about the same age as someone grown.