Hagun and Tonrou are two spirits who dwell within the stars, and at certain times throughout the history of the world, one spirit has lent its power to a human being. However, when a particularly chaotic and turbulent time erupts, both spirits lend their powers to two humans. Taitou receives the power of Hagun, while General Keirou of the Empire receives the power of Tonrou. Now, the two individuals have the power to bring peace to the world, though Taitou believes the Empire has been oppressing people, while Keirou believes that what’s being done is for the greater good. The spirits have done their part, though the fate of humanity relies on the outcome of a few extraordinary heroes.