That's what I've heard, yes - at least as far as Johto goes. I can't say for certain because I've never been to Kanto and I haven't heard quite as much about it, but from what I understand a few cities there are rather large as well. They don't seem to have as large a population of "foreigners", however.
...The name of that region threw me a bit, I'll admit, but it's presumably nothing like the Kanto we know - I don't believe there's a Tokyo equivalent, at least.
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...The name of that region threw me a bit, I'll admit, but it's presumably nothing like the Kanto we know - I don't believe there's a Tokyo equivalent, at least.