Diana is the main character of this series. She lived her life as a normal girl until college. One day she was walking back to her dorm after getting groceries for food. While walking back, she encounters a monster while passing an alleyway. All of a sudden her best friend, Lilly appears and transforms into a magical girl. Lilly hands her a choker to transform too and they fight off the monster together. She turns to Lilly to ask about what happened but Lilly had already left. From that day forward her life was never the same again.