Return of the Namgung Clan's Granddaughter

Story

Because she was kidnapped and raised by the Blood Demon, Seolhwa destroyed the Namgung Clan, unaware that she was its lost child. When she learned the truth only after being killed by the master who used her, she awakens eight years in the past and returns home to try and change fate. But a dark spell and forbidden seals keep her from speaking the truth. Can Seolhwa change the future of her clan and prepare Namgung for what’s to come? Or will her family's blood spill once again?

Synopsis via AniList (English).