Hibiki Sakura is the main protagonist in the anime series 'Dumbbell Nan Kilo Moteru?'. She is a high school student who is concerned about her weight and decides to join a gym to lose some pounds. Despite her initial disinterest in fitness, she develops a passion for weightlifting and exercise. Hibiki is known for her insatiable appetite, cheerful personality, and determination to achieve her fitness goals. Throughout the series, her growth and improvement inspire others around her as she navigates the challenges of her fitness journey.