I watched a video from an American guy who did this. But he already had residence, and made it very clear that if you don’t have residence, doing something like this would be a waste of time and money. He bought a massive junker of a house and it took him like 2 years and a bunch of help to make it livable. Still a good video, and still a cool idea, assuming you have certain ducks already lined up. Definitely not something to do on a whim.

I looked at doing something like this in quite a few countries, and skipped on Japan pretty quickly. Happy with my decision though.