①You don’t have to pay 15,000 USD upfront (when entering the school).

 ② If you study in Japanese language school for more than one and a half years and plan to take admission in a university or graduate school, you can stay without any trouble in Japan  more than the initial one and a half years if you have savings amounting to 15,000 USD. ・ ・ ・ If you enter a Japanese language school, you can earn 90,000 to 100,000 yen working in part-time jobs.  So you can save 30,000 to 50,000 yen a month deducting 50,000 to 60,000 yen a month as living expenses. (360,000 yen to 600,000 yen per year)

 If you go to a university or graduate school and study well, you will receive a scholarship from the second year, and your tuition fees for university will be very low or 0 from the second year.

 ③ However, if you do not have savings of 15,000 USD at the beginning, you will have to stop studying and will have to return home due to lack of money.

 (4) The Immigration Bureau in Japan also thinks that it is difficult for it to grant permission for study in Japan to the student in case the financial sponsor (or the student himself in the case the student himself pays for his expenses) without proof of savings of 15,000 USD or more.

 ⑤ Some people want to study abroad by taking a bank loan, but the loan is a  debt and must be repaid.  If you fail to repay the loan within the period during which you are studying in Japan, you will violate the law and work long time part-time jobs inorder to repay the loan. There is a possibility of forced repatriation in some cases because it is against the law.  As a result, the Immigration Bureau of Japan tends not to accept applications for studying in Japan with loans.  (Bank balance certificate may be investigated.)

 For these reasons, study in Japan is subject to financial support (usually his / her father or mother) or the person himself must have a savings of more than 15,000 USD.

 ▶ There are some people who do not have 15,000 USD and make fake  bank certificates, but the Immigration Bureau in Japan is very good at detecting fake bank balance certificates, as it comes across  a lot of them.  Those who have been accused of forgery will hardly be able to enter Japan.