You must prepare the Articles of Incorporation and have them notarized by a Japanese notary public.
If you plan to establish a company with a board of directors, you should include a provision allowing the board to adopt resolutions in writing (i.e., without holding a physical meeting).

You must pay in the company’s capital to a bank account opened with a bank or other financial institution under Japanese law.
You may use an account opened at a Japanese bank’s branch in your home country or at your home country’s bank’s branch in Japan. If neither is available, you may appoint a third party who has a bank account in Japan to receive the capital contribution on your behalf.

After the capital has been paid, you must appoint at least one director.
If you choose to establish a board of directors, you must appoint at least three directors and at least one corporate auditor.

Finally, you must file an application for incorporation with the Legal Affairs Bureau that has jurisdiction over the location of the company’s head office.

You must submit each officer’s (directors’ and corporate auditors’) written consent to assume office and their seal registration certificates. If any officer does not have a registered seal in Japan, a signature certificate issued in the person’s home country may be submitted instead.

Upon completion of the registration, the company becomes a legal entity.