Kingdom of Tomorrow (Book of Arden 1)

Kingdom of Tomorrow follows twenty-year-old Arden Roosa, who lives in Ourland, a world combining modern and fantastical elements with broken pieces from each realm, fallen god statues, and worshipped or feared heavenly artifacts. A strange madness afflicts the darkest hours, transforming innocent people into violent killers. Arden's life shifts when she discovers a book called The Book of Arden written about her. She is forced to join Fort Bala Royal Academy, where she is paired with High Prince Cyrus Dolion for combat training against a mystical adversary. Despite her panic attacks and the demands of war games, an undeniable attraction develops between them. Arden is also recruited into the Tome Society, rumored to guard an invisible library containing books that predict the future. As she learns more about the society, her understanding of Ourland, the gods, and her own destiny becomes increasingly unclear.