Hagoromo's two sons, Ashura and Indra, share a happy childhood, training and playing together. Indra is naturally gifted with great talent, and at a tender age is nicknamed the "genius of Ninshu." On the other hand, Ashura has no aptitude for Ninshu. Still, the two boys are very close. But Hagoromo is unaware of the malevolent power stirring in the shadows…