Yuugeki Shoujo Ataru-chan

Ataru is a cheerful and energetic girl who lives in a small town. She spends her days playing with her friends and helping out at the local shrine. One day, she discovers a mysterious power within herself that allows her to transform into a powerful warrior. However, her newfound abilities attract the attention of a group of shadowy figures who seek to exploit her for their own purposes. As Ataru struggles to control her powers and protect those she loves, she must also confront the dark secrets of her own past.