Like both of these ideas… A test maybe not so much as a level zero that you have to unlock to see level 1.
Then give the beginners a break with some hints.
Maybe if it’s correct except for a small ya yo yu tsu
… Or whatever…
That item does not up or down, instead you see it again an hour later… Then you’ll likely learn pretty fast with the exceptions of typos.
Maybe the crabigator shows up and says… Are you sure that’s not… Blah… Or even before you type out the whole thing… If you start to type out りよ a caution crabigator pops up… There would be some fun ways to implement this.