I Was Transformed into a Magical Girl

A transformation experiment turned Elena into a monster, and she fought an endless battle in the dark arena... After escaping from there, she forgot all about it. In her heart, she just wanted to be an ordinary person and live her life peacefully. The man-made monsters that frequently appear and destroy the city, the magical girls who are defeated in order to protect the city, and the ordinary people who are tricked into doing transformation experiments... Faced with everything that happened before her, Elena chose to embrace the past, become a magical girl, and prevent all tragedies from happening!