Tenkuu Senki Shurato: Sousei e no Anto

天空戦記シュラト　創世への暗闘

This is the continuation of the TV series. The battle for the celestial sphere is over. Gai and Shurato have been erased from history. However, another danger is coming ahead, and the eight guardians are sent back to Earth to investigate. As Shurato tries to win back his friends in a world that has forgotten him, a new villain has a mysterious plan for them. (Source: AnimeDB)