Does anyone know an anime with a girl who sets out on an adventure, but the story shifts to a priestess who is betrayed, before her lover, a prince of her kingdom, is killed. She then destroys the world and goes in a loop of destruction? At the end the first character goes to save her, and they both save the world before the first MC dies. Then the priestess becomes pregnant, because the first MC was her magic, in the first place. Does that sound familiar to anyone? I lost it because I didn't think I would need to recommend it to anyone, but now I wanna watch it again.