The Villain still wants to be a villain, even after the first time.

400 years ago, humans with supernatural powers appeared. Lucy Kart was one of them. But Lucy didn't use her powers for good, she used them to destroy everything she saw. As she was dying she saw a kid who's father was someone she killed. She regrets it all for a split second then dies. A goddess in charge of the earth, took interest and made her reborn back when she was in school.