> Citibank in Japan has the funniest rule: you have to receive in person a letter sent to your residency address every month if you intend to keep your account alive. Failing to do so for whatever reason automatically locks the account and you have to come to them to prove you still meet their requirements.

While this is annoying and is excessive to what's required in law (it must be done at least yearly, and most banks do not try to annoy foreign residents more than what's legally required), Japan does require all Japanese-domiciled bank that they verify that the owner is either a Japanese national or a long-term resident in Japan. In fact, most Asian countries do have a "must be a citizen or resident" or even the much more stricter "must be a resident" requirement.

At least it's not India, according to Mastercard and Visa India even prohibits foreign long-term residents from maintaining an account in their country of nationality (and therefore we must always certify that upon our knowledge we do not send cards, even debit, to India).