L5R LCG: Fate Has No Secrets Expansion Pack - Rules of Play says:

Each of the seven Great Clans receives new cards that continue to embrace and define the themes that began in the Legend of the Five Rings: The Card Game. Along the way, you'll find a great assortment of cards focused on the Imperial City of Otosan Uchi. From neutral samurai sworn to the Imperial family, to Imperial magistrates from each of the Great Clans, to rewards for holding the Imperial Favor, this cycle draws you into the world of Otosan Uchi and the service of the Emperor.