Singing along while reading kanji somehow helps me learn more kanji, but I suck at reading kanji, so I just have to write both in kanji and in romaji to help me remember when I forget how to read the kanji. So, here it is in case you need it too :)

Also, I am happy that they perform this acoustically as a group and what's more, they post it on Johnny's official YouTube channel, so if you haven't watched it, please watch :)