As the legendary Hero King Mars, Hiro Oguro once ruled battlefields, conquered nations, and founded the continent-spanning Grantzian Empire before giving up all memories of his hard-won glory to return home to his old life. In the years since his return, he has forged a new legend to rival the old—one which now hurtles toward its conclusion. The final battle is at hand. The Demiurgos and his monstrous hordes are poised to destroy all Hiro and Artheus once fought for. Against them stand the empire’s last hope: Liz, having come into her own as the heir to the throne, and Hiro, determined to fulfill a long-held promise. Yet old sins haunt the pair still, and a convergence will envelop Soleil as past and present collide. When the final chapter of the mythical hero’s otherworld chronicles is written, how will their story end?