Ask your university or place of employment to send you to Japan for training. You will need a "sender" organization to receive the trainee visa.
Apply to Japanese companies as a trainee. Once you have been accepted by a Japanese company, the company will become your "sponsor" throughout the rest of your visa process.
Ask your Japanese sponsor to obtain a certificate of eligibility for you. You may obtain the information for this certificate at the Japanese-language immigration website, www.immi-moj.go.jp. Instead of a certificate of eligibility, you may submit with your application these items: a training plan, schedule, invitation letter from your sponsor, your educational qualification, the sender's business information, the trainer's qualifications and the sponsor's business license, along with one photocopy of each document.
Fill out the correct visa application provided by your local Japanese embassy or consular office.
Take one passport-sized photo at a photo processing center to attach to your application.
Drop off your application with attached photo, original passport and certificate of eligibility or supporting documents as described above. As of April 2010, this is a free visa.
Allow at least four days for the Japanese embassy to review your application before picking up your visa.