How to Leave Japan
Most student visas are 12 months of school & 3 months of free time. At the end of the 15 months (if you haven’t acquired a new visa) you need to leave Japan. Do not leave Japan without completing these tasks, and submitting these documents:
Notify the School your plans to leave Japan.
Pay all outstanding bills, rent, or utilities.
Close your JP Bank account.
Submit a Notification of Moving Out (Tenshutsu Todoke) at city hall.
Return both health insurance cards (green and pink) to the city hall.
Give your residence card to the immigration officer at the airport.