A boxing gym. Facing a black sandbag, she swings her hips and delivers a powerful straight punch with a beautiful form. A Japanese high school girl with long black hair, wearing red boxing gloves, a white shirt, and a deep green checkered pleated skirt. She glares with a serious expression, her hair and skirt swaying. A close-up of the woman's face. The spot where the woman punched bursts like magic, and sand scatters.