Mizuki Ashiya is a fictional character from the live-action adaptation of the popular manga and anime series, Hana-Kimi. She is portrayed as a determined young girl who disguises herself as a boy to attend an all-male high school in Japan. Her primary motivation is to get closer to her idol, Sano Izumi, a talented high jumper. In the series, Mizuki faces various challenges while maintaining her disguise, leading to comedic and heartfelt moments. The story explores themes of friendship, identity, and perseverance, as Mizuki navigates her new environment and the relationships she builds with her classmates.