The Idaten Deities Know Only Peace

At the dawn of time, the gods ruled the universe under the leadership of the mighty Tentei. But suddenly, the ferocious general, Taishakuten, appears, and destroys Tentei. Taishakuten declares that a new age has begun, and all who oppose him will die horribly. But legend says that a shimmering six-pointed star will rise into the heavens and restore the world to a golden age. The six points are six warriors, each with the power to move the stars and the hearts of all people...

In a world of idle gods, humans are forced into brain challenges with them. With three defeats, humans lose their right to challenge, while 10 victories spell human triumph. Fay, determined to achieve the impossible, enters the ultimate test of wits against the gods. Will he defy divinity or is he just another loss in the making?

The anime takes place in a world where humans are continuing to fight a war against an enemy called UNKNOWN. UNKNOWN invaded several decades ago, and children entered a cold sleep to escape the invasion. When the children awoke, they found themselves with supernatural powers. The children set up defense cities in Tokyo, Kanagawa, and Chiba in order to protect the country from the UNKNOWN, who appear through the Tokyo Bay Gate.

The record of the bloody battle between the twelve proud warriors— The 12th Twelve Tournament that gets held every twelve years… Twelve brave warriors who bear the names of the signs of the zodiac fight each other for the lives and souls. The participants are twelve very strange warriors: “Rat,” “Ox,” “Tiger,” “Rabbit,” “Dragon,” “Snake,” “Horse,” “Goat,” Monkey,” “Rooster,” “Dog,” and “Pig.” The victor of this tournament gets to have one wish granted, whatever the wish may be. The one wish they want granted— Who will be the final survivor? Whose tears will flow on the bloody battlefield filled with conspiracy and murder? A soul-shaking battle royale is about to begin.