'Sorry for the contrarianism, but I don’t care for Wani Kani Mnemonics; I feel - and have learned from experience with another Asian language and with Japanese as well - that making my own mnemonics ‘is the point of (better) mnemonics’, because after all, the mnemonics one makes him or herself are the mnemonics our consciousness thinks of naturally, so they are the mnemonics we will recall easily and/or re-invent again!
I once bought that big, soft-cover, famous, white mnemonics book from Kinokuniya in New York (I don’t recall the name) - the one everyone who has browsed Japanese learning materials has seen for sure, and 'sorry again; it’s pure bullocks! Everything I thought of it ran counter to and I threw it away.
So - ! Can I use Wani Kani and still pass your quizzes, or do I have to adhere to learning your mnemonics to do so?