Legend of Heavenly Sphere Shurato

Legend of Heavenly Sphere Shurato ((天空戦記 シュラト, Tenkū Senki Shurato, lit. "Shurato of the Heaven Wars"), is a manga series by Hiroshi Kawamoto. It was adapted into an anime by Tatsunoko Production. It ran 38 episodes on TV Tokyo from April 6, 1989 to January 18, 1990 and also spawned a 6-episode OVA series named Shurato: Dark Genesis (シュラト 創世への暗闘, Shurato Sōsei e no Antō, lit. "Shurato: The Secret Feud of Creation"), that ran from August 16, 1991 to March 16, 1992.

Plot
The plot revolves around two non-hereditary brothers, Shurato Hidaka and Gai Kuroki, lifelong best friends who are polar opposites of each other in appearance and personality. While fighting each other in a martial arts tournament, they are suddenly encased in a beam of light and transported to a parallel world, Tenkūkai, where modern technology does not exist and instead the people rely on Sohma, a form of spiritual energy.

Shurato discovers he is actually the reincarnation of an ancient king of the same name, who once ruled this world, and one of the "Hachibushu", a group of eight legendary warriors with large quantities of Sohma, and was brought here along with Gai to fight the Asura Gods, a legion of destructive warriors. However, for unknown reasons, Gai attempts to kill Shurato repeatedly, confusing Shurato as the real Gai is a pacifist and the most compassionate person he knows.

Things quickly go wrong when Shurato and another of the Hachibushu, Ten-ō Hyūga, are framed for the petrification of Lady Vishnu, a powerful divinity and the leader of the people of Tenkūkai. The actual culprit, Vishnu's highest advisor and Asura spy Indrah, and the corrupted Gai manage to convince the remainder of the Hachibushu, as well as all of Tenkūkai's warriors and soldiers, that Shurato and Hyūga are evil and must be killed.

Although at first reluctant to get involved, Shurato eventually resolves to aid Hyūga in uncovering the conspiracy and cure Vishnu. They are accompanied by the young Tenkūkai spirit priestess Lakshu, and two others of the Hachibushu, Ryū-ō Ryōma and Karura-ō Reiga. Along the way, they engage in battle with the other four of the Hachibushu, sinister Asura agents in league with Indrah, and the majority of Tenkūkai's population.