· Power from Another World!

More than six thousand years ago, the war in which the gods led their Kin in a struggle for sole dominion over the world continued without end. Miserable wars that split heaven and earth erupted across the world. The stars were shattered, the sun was extinguished, endless dust blotted out the sky, and everything upon the earth fell into decay.

Under those circumstances, the Human Race, powerless to resist, was driven to the brink by the various powerful races. They could only hide underground or in caves, clinging to life on the verge of extinction.

And in those circumstances, the young leader of the Human Race at the time, Riku, encountered the Ex-Machina girl Schwi while searching for supplies to survive. Abandoned by her own kind, Schwi, seeking to repair her malfunction, asked Riku to tell her about the existence known as a "heart."

In the time that followed, Schwi's innocence and sincerity gradually made Riku lower his guard. In that almost hopeless world, the boy and the girl relied on each other, and with Riku at her side, Schwi, who had originally been nothing more than a simple Ex-Machina girl, gave birth to the existence known as a heart.

But by then, Riku had already learned from Schwi the reason for the great war between the gods and the major races. For absolute dominion over the world, for the Star Grail, the gods had chosen to kill every deity other than themselves. In that way, the deity left behind would become the One True God and obtain the Star Grail.

For the continuation of the Human Race, and to save this despairing world, a brand-new plan was born in Riku's heart—to seize the Star Grail before the gods did and become the One True God!

Because Riku had discovered