Similar to what the UK is doing with it's declining population. The UK is bringing in many Polish immigrants to fill gaps by a declining population.
Do you think something similar will happen to Japan in which it'll bring in more immigrants? Where do you think they'll come from if they do?
Or do you think that Japan will tough it out with the population they have?
I personally hope they do not increase immigration, I think Japan is best staying as a homogeneous nation.