Rokka: Braves of the Six Flowers

Story

Seven heroes gather to save the world--but the legends spoke of only six. Long ago, the Evil God was sealed at the edge of the continent, where it lies in slumber. Each time it awakens, it threatens to plunge the world into hell, and each time, six powerful warriors are chosen to seal it away again. But now, as the cycle begins anew, the Crest of the Six Flowers marks not six Braves...but seven. Hans, the mysterious assassin for hire. Mora, the elder of the All Heavens Temple. Chamo, the young but deadly Saint of Swamps.

Synopsis via AniList (English).