[this is the kh2 timeline]

roxas: I'm sorry... what? and.. thats how your just a floating heart who can somehow talk right now? all because something is wrong with sora's heart?

ventus: yeah. honestly, though... considering I dont really remember anything before the day I met terra and aqua, there's probably something else.

roxas: ...damn... well, we gotta find out why sora's heart wont let me join with it.