@Seraphus
From Japanese wiki
Apologies for google translate.
Q. What is the US Army in Japan doing?
A. The reality of the US military is that it will never move without an order from the home country, so Mr. Minoru basically takes the stance of not moving.
The editor also respects that intention, so you should think that he will not be active in the future.
For the time being, he seems to teach the SDF how to operate an aircraft carrier.
To put it a little further, the time to replace the fuel rods in George Washington is around Volume 4, so even if you want to move it, you may not be able to move it.
Q. What happened to foreigners living in Japan?
A. Apparently they moved to the new world together.
I am trying to acquire Japanese nationality and preserve my own culture. (Book version)
Q. Kunashir Island and Etorofu Island have been transferred, but what about those people?
A. That's it. Please do not touch it as it will be politically troublesome. This side, not here.
It seems that all the "portions that the Japanese government claims to be unique to Japan" have come to the world of work in progress.
So Minami Karafuto has not been transferred.