If large parts of japan become not fit for human habitation due to radioactive contamination,what then?

Question:

I men say if they go from bad to worse with their nuclear reactors and theres meltdowns and large parts of japan are contaminated,what then if there are calls for large scale evacuations of japanese nationals to other parts of the world,where do u think they will be sent?
What parts of the world have plenty of land for them to evacuate too and millions or tens of millions of them over time?

Answer:

Don't have a wrong idea like Japanese people want to move to other countries.

Most Japanese people want to stay in Japan.

It depends on what you mean by large part. But even if 20% of Japan is contaminated, it's still 80% safe. And it's enough for Japanese people to live.