[NTREEG]

You could get a "pre-college student" visa to attend language school in Japan. You can do that with or without already having a college degree. The major requirement is that you have to have enough money already in the bank to support yourself without working for the entirety of your stay (somewhere around $20,000 - $30,000 USD). However, once you get your pre-college student visa (and after a 3 month waiting period), you're usually allowed to work part-time up to 20 hours a week if you can find a job. Just know that getting a pre-college student visa takes a lot of time and preperation, it has to go through your language school, and language schools usually apply for your certificate of eligibility for you at designated times throughout the year. They usually recommend you apply 6 months in advance of when you're planning on coming over.