She Has a Bad Personality but She Became a Magical Girl

Arrogance, narcissism, absolute egoism, and a bystander attitude. I am obviously a combination of these bad characters, but I was chosen to become a magical girl? Protect the city from monsters? I'm so sorry. As a high school student, how could I have time to do that? But... If those guys really go too far... It's not impossible for me to take some action. But this is not because I suddenly realized my conscience, after all, my character is so bad!