Cosy af !
I've been using the Mina no Nihongo books for a few years now to learn Japanese. a while ago I bought myself a Doraemon educational book (not manga) called kyouryuu daitanken and it's REALLY hard D'X it's a little discouraging because its for grade schoolers. And even the doraemon maji kazu book uses sentence structure so very different to what I've learned I don't understand a lot of it. it's a little disheartening. (and I really like Doraemon >.< so that's not the problem)