Regardless of the immigration thing.

Japan is a very small state (relatively), its amazing to me that china hasnt gobbled it up yet.

Japan has 125 million people living in it, canada only has 40 million and 2 or 3 of that is immigrants.

Anyway, again, china has 1.4 billion people living in it.

https://www.bbc.com/news/world-asia-china-57154574

After all, there is a severe gender imbalance in the country - last year, there were 34.9 million more males than females.

30 million lonely, horny, frustrated men lol...... I just dont see any scenario where this ends happy for everyone