Black Clover: Primordial Human (Rewriting New One)

Long ago there was a race that was very much feared. During those times a treaty was made to make the human race very much weak. In doing so they got rid of the biggest threat the humans that had very special magic that was a combination of two opposing elements. That made the race much weaker. In doing so they were free from the horror of the race becoming strong again. In a last-ditch effort, the primordial humans knew even if they had a peace treaty the other races would end up having a war that would end everything. So, in the last-ditch effort the ones who protected all races decided to send the youngest they had in time when she was very young at the age of two. She was young, but they put all the memory into her. At the age of two people of this race already have the mental power of a young adult. Even if people feared this race what they did was keep peace and protected the world from ever going into a big war. In the end she was put into the future of black clover where these races will go into war because of the race that would've caused it the most that being the devils.