Student Visa
Those who wish to enter Japan as international students to study at a Japanese institution of higher education must obtain a "study abroad" visa when they enter the country.
In order to stay in Japan, you will need to apply for an extension of your period of stay, a change of residence status, re-entry permission, etc., as necessary.
The maximum period of stay permitted in Japan as a student (visa status "Student") is 4 years and 3 months. If you are studying beyond the period of stay, you will need to apply for renewal of your period. The renewal procedure must be completed by the expiration date of your visa, but it takes about 2 weeks to 1 month, so please apply well in advance
External Link: