Right. Since you started explaining from a physicist's perspective, I should try a psychological one.

Do you know what borderline personality disorder is?

Japan has many cases of this. That's actually because the border between "god" and "person" is thin here.

...No, not just gods, but also youkai and other such unknown beings.

Hmm. So, is that what you came to study in Japan?

A human may lose sight of the border between "god" and "person" and aim to become a sublime... godlike being.

What's that got to do with worlds?

So...