1, above N2 in Japanese, and N 1 in liberal arts is the best.

2. Japan is a tutor Neno system, so it is very important to contact the tutor in advance to get Neno. It is also necessary to find out how many months each year the university you apply for enrolls students, probably a few months, at least more than half a year in advance. After Neno got the visa, it was easy to apply for it.

I only know that Japanese law is the best legal system in Asia. Many law students want to study in Japan, but I don't know the rest. sorry

4. The tuition fee for graduate students is about 20,000 per year (different majors are different, but the ratio is very low compared with the department), and the monk is similar.

I hope I can help you. Just ask.