Swimming diving competitions are harsh competitions in which the impact from the water surface can be as much as 1 ton when diving from a height of 10 meters. Mizuha Shiozaki, a transfer student in Class A of Shirasagi High School, is a girl who has won many classical ballet competitions and is called a ``genius.'' However, she was unable to keep up with the strict guidance of her mother, who was a world-famous prima donna, and quit ballet in her third year of junior high school due to her resentment towards her mother.She thought she would spend her high school life in a relaxed and fun way,...