Kirk here. This information about Japanese classes is from the International Centers website. The English is the results of Google translation service. You can click on a button on the page to see the original Japanese. Much of the Japanese is “easy” (“yasashii Nihongo”) so if you’ve already good a “foot in the door” with Japanese, you might want to take a look at it.
https://www-kumamoto--if-or-jp.translate.goog/list00066.html?_x_tr_sl=ja&_x_tr_tl=en&_x_tr_hl=ja