Don't know why, but I can understand it well enough. I think it's the fact that people dive too deep into a story and don't take a bit a mystery into the story line. Not everything will be solved directly. You have to come to a conclusion just like how Sora realy does get the planets open again. that's probably why it's called Kingdom Hearts in the first place. It's hard to exsplain what the heart feels and creates a natural mystery.
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