If you are looking for an intermediary, you need100000 a year to go to a language school in Japan, and you need a school visa. It is not a visa for studying abroad, and after going there, I will go to a language school, which may be one year or two years. Then I took a local exam in Japan, where I took not only Japanese, but also other subjects, and the winning rate was very low. My friend is now training at Yu Ying College of Continuing Education. They are not intermediaries, but preparatory colleges of Japanese universities in China. You can go and have a look. There should be a phone on Baidu.