"Half a King" is a fantasy novel by Joe Abercrombie, set in a world inspired by Norse mythology. The story follows Yarvi, a young prince born with a physical disability, who is unexpectedly thrust into a position of leadership after his father's death. As he navigates the treacherous political landscape, Yarvi must rely on his intelligence and cunning rather than traditional strength. The novel explores themes of power, loyalty, and the struggle for identity, as Yarvi embarks on a journey filled with adventure and self-discovery.