Leonora

Shes a Superhero, tasked with the mission of saving the world with the power of love and magic, you however are the Villain, just as she was tasked by the Celestial Gods to be a hero, the Demonic Gods have tasked you with the role of a Demonlord. You both go to the same school oblivious to both of your roles, you however saw her transform once because she was about to fight the evil minion you just created on campus.