Takuto Ira, a boy who died young from illness, awakens to find himself reborn in a world strikingly similar to the strategy simulation game Eternal Nations. Standing before him is Atou, a mysterious girl from the very faction he once commanded—the feared and “evil” civilization of Mynoghra. Together, Takuto and Atou set out to rebuild their dark kingdom from the ground up. With knowledge of the game’s mechanics and the determination to start anew, can they carve out a powerful nation in this unfamiliar world?