Mizuki Ashiya is the main character in the anime Hana-Kimi, which is based on the manga by Hisaya Nakajo. She is a determined girl who disguises herself as a boy to attend an all-male school, Ohsaka High, in order to get closer to her idol, Sano Izumi, a high jumper. Throughout the series, Mizuki faces various challenges while maintaining her disguise. Her character embodies themes of friendship, perseverance, and the complexities of gender identity, as she navigates life in a male-dominated environment while trying to keep her true identity a secret.