First of all, as a 16-year-old minor, traveling to Japan alone does have some restrictions. Here are some steps and advice to help you apply for a visa:

  1. Parent or legal guardian’s consent: Since you are a minor, you need to provide a parent or legal guardian’s consent. This may require writing that they agree to your traveling alone.

  2. Applying for a single-entry tourist visa: Since you mentioned that “this is not allowed”, it may be because Japan’s visa policy has specific requirements for a single-entry tourist visa. You can try to apply for a single tourist visa.

  3. Prepare necessary documents:

    • Passport: Make sure your passport is valid for at least 6 months.
    • Photo: A recent photo that meets the visa requirements.
    • Parent or guardian consent.
    • Trip plan: Describe your travel plan in detail, including destination, accommodation, itinerary, etc.
    • Proof of finances: Prove that you have sufficient financial ability to pay for travel.
    • Travel insurance: Purchase insurance that covers the entire duration of your trip.

  4. Contact the Japanese Embassy or Consulate: Learn about the specific application process and required materials. The application process may vary in different regions.

  5. Submit Application: Submit complete application materials as required by the embassy or consulate.

  6. Waiting for Approval: Visa applications usually take a while to be approved. During this period, keep communications open so that the embassy or consulate can contact you if necessary.

  7. Preparing for Travel: Once you have obtained your visa, you can start preparing for your trip.

Please note that since visa policies may change at any time, it is recommended that you pay close attention to the latest news and guidance from the Japanese embassy or consulate.