Should I just rent forever?

Apologies in advance for not knowing the rules of this sub:

41M/41F moving to Tokyo in the next year with $2.2 million NW, almost entirely in US equities. No US real estate.

I have an ok job based in the US ~$500k for 6 months of work per year (doctor), which is completely not transferrable in any way to work in Japan. I'll continue to work for 1-2 more years, then retire completely.

We're looking to rent in Tokyo in the ¥400,000/mo range for a bit, but I do have the feeling that I should be putting this money into local RE, particularly given Japan's relatively low interest rates.

But my lack Japan-based income excludes me from a mortgage. I don't know of any banks that would offer SBLOC for an international RE purchase, and it seems like a bad idea to liquidate half of my NW, pay US taxes, transfer money to Japan, pay taxes again, and buy a property, and live on 50万円/mo instead of 100万円/mo.

Wife is Japanese and does also have ¥100,000,000 Tokyo real estate portfolio of small apartments which we wouldn't really be able to live in, and just generate a bit of passive income excluded from the above.

I'm curious how Japan finance would navigate this purely from a financial standpoint.

by GuavaThonglo