Revenge of the Dragon Lord

Seraphina, a snake spirit, meets Emperor Kael Shaw. He uses her power; she uses his Dragon Aura. They fall in love. Kael Shaw accuses her as Demon Consort, imprisons her, carves her Snake Heart. Seraphina undergoes Rebirth, returns as a dragon, overthrows Kael Shaw's empire. After revenge, she guards Qingqiu, passes position to Linchen, her soul merges with Qingqiu, attaining eternal peace.