From Eurogamer: “If it’s not clear already, Legacy of the First Blade is one for the fans. It’s the story of Darius, the first to wield the legendary Hidden Blade, and the one to use it on the preening Persian ruler Xerxes. But it’s also another saga for your Assassin’s Creed Odyssey main character (AKA, Kassandra), who meets Darius as he arrives in the main game’s Greek region.”
Source: N4G PC Assassin's Creed Odyssey's first big expansion is one for the fans – Eurogamer