Japan’s local governments are trying to give away millions of abandoned houses: https://www.travelandleisure.com/travel-news/japan-free-aban...

Similarly to rural Italy, France, Spain and USA, as people move to urban centers, rural population falls and small towns die. Japan’s demographic situation makes their case extra difficult at the moment.

Those immigrants want to move to the same urban centers because they're looking for work, not a retirement home, so the issue remains.