How long can you stay in Japan with your passport?

The passport is valid for 10 years.

But if you want to stay in Japan legally, you need to check the visa.

Student visa is 2 years, and technical visa is 3 years.< /p>

Sufficient reasons are required to apply for a visa, such as working or studying abroad.

Renewal means signing in Japan, and you need proof that you can stay, such as a school certificate or a work certificate.

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Theoretically, if he keeps renewing his contract, he doesn’t have to come back.

Let me say something private. If you want to see your friend, you can go see him. Go now. Traveling to Japan is not expensive. You only need more than 3,000 to spend a few days there. And if he is working as a temporary worker, he may be refused a visa at a certain time.