King Of Scars. Even Without Zoyalai. Is Such An Amazing Duology - Tumblr Posts

Right, if you want to read about zoyalai specifically then you should read the king of scars duology (King of Scars and Rule of Wolves). If you want crumbs then there's some in the original grisha trilogy (literally only two lines of them mentioning each other, no interactions) and Crooked Kingdom (only in a couple chapters).

So I’m curious about zoyalai ever since I watched Shadow and Bone season 2 and I want to know more about them, can someone who has read all the grisha books tells me which ones I’ll need to read for zoyalai, specifically how they fell in love (crumbs included?)