If you want to ask about skills, there are the following points:

1 It's easier to study for graduate students before undergraduate courses. This has nothing to do with whether you study in a language school or not. You can apply for graduate studies through domestic intermediaries, or you can apply after going to a language school.

You don't need an exam to apply for a graduate student, but you need to submit books and materials. Such as research plan and graduation thesis. As long as your ability can be recognized by the professor, there is hope to enter his research room.

1 University of Tokyo National 535800 Science N2 Liberal Arts N 1

2 Kyoto University National 535800 Science N2 Liberal Arts N 1

3 tokyo institute of technology National 535800 Science N2 Liberal Arts N 1

4 osaka university national 535800 science N2 liberal arts N 1

5 Northeastern University National 535800 Science N2 Liberal Arts N 1