Summoned to a "world in which games decide everything" by a boy who calls himself a god, ace gamer siblings Sora and Shiro capture Immanity's throne in the blink of an eye and set their sights on a new conquest-The Eastern Union-third most powerful nation in the world. But an encounter with Jibril, the Flügel prompts an unexpected game of materialization shiritori! Against a creature with the power to slay gods, can " " come out on top?