Nana the Supergirl

Nanako is a young girl who suddenly gains strange powers but loses all her memories in the process. By chance, a brilliant high school student named Marlow witnesses her transformation. Ambitious and hardworking, Marlow convinces Nanako to join his detective agency by offering to help her recover her lost past. Though Nanako trusts him, Marlow’s true motive is to exploit her abilities for his own gain. As Nanako takes on dangerous cases and strange mysteries, her cheerful optimism keeps her going, allowing her to solve one puzzle after another despite the risks.