I read the Six of Crows duology and understand this world well! Do i REALLY need to read the Grisha trilogy before this book? Im not asking for the sake of saving myself from spoilers in the chance that I want to read the Grisha trilogy because I dont :( But like ... will I be able to read this book without the other trilogy? (Keep in mind that a lot of the characters were already described in Six of Crows duology)