Is it troublesome to immigrate to Japan?

Through Ji Jun&; I have consulted. In fact, in many countries in the world, for the sake of national interests, foreign residents need to pass exams before they can immigrate. Compared with the immigration examination in Australia, Japan itself is not an immigrant country, so there is no immigration examination. Australia obtains permanent residency before applying for naturalization, while Japan has lived and worked in Japan for five years, and can apply for naturalization (naturalization) after 10 years. In this way, naturalization in Japan is easier than permanent residence.