Kirk here with some information on Japanese classes. The image you see was converted from a pdf that is linked to from the following page on the International Center’s website:
https://www.kumamoto-if.or.jp/kiji003349/index.html
I’m not sure if there’s an English version of the same information but the important point is that there are many venues that offer Japanese classes and that you can call the phone number or send an inquiry to the e-mail address shown at the bottom if you are looking for a class that will meet your needs.
This list of opportunities is not complete. Please feel free to add notes regarding other opportunities in comments to this post.