I've loved romance novels since...like forever. I read across most subgenres of romance. I also write fantasy/paranormal and new adult romance.
Day Zero is a companion book to Kresley Cole's Young Adult series, The Arcana Chronicles. As a huge fan of the series, I totally loved it. Day Zero refers to the day of The Flash, the apocalyptic event that starts the next "game" between the players/characters. Normally, I'm a fan of reading books out of order (yes, such a rebel!), but for this, it's chock full of spoilers from the first three books. While it did follow some story structure across the chapters--which were each full descriptions (er, mostly) of the 22 Tarot cards--I'm not sure it would mean much to someone who hasn't read at least the first book.
I thought Day Zero adds to the series, little details that we wouldn't get otherwise, that more fully round out the supporting characters. I loved learning more about Selena, Finn, and Joules, as well as other cards we haven't met yet. I also appreciate the diversity and global-span of the players backgrounds and identities.
As for the Evie-Jack-Aric love triangle, it lives on in this companion book. With separate chapters from Aric and Jack, we learn more about these guys and, importantly, why they're so crazy in love with Evie. Swoon. I'm firmly #TeamJack, but Aric's chapters are absolutely heart-breaking.
Cannot wait for the next book, Arcana Rising, to come out!!