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)
Watch Tenkuu Senki Shurato: Sousei e no Anto episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.