Nanako Shichigusa is the main character of the anime series Nanako SOS. She is a cheerful and somewhat naive girl who unexpectedly gains superpowers. Despite her clumsy nature, she is determined to use her newfound abilities to help others and solve various problems that arise. Throughout the series, Nanako's innocence and good heart lead her into a variety of comedic and often bizarre situations. Her role is central as she navigates the challenges of being a supergirl, balancing her powers with the desire to lead a normal life.