Kozue is a highschool girl and enthusiastic volleyball player. Her dream is to play in the Japanese national volleyball team. During the series she makes it from the school district league up to the Japanese volleyball finals, step by step till the international volleyball championship. But the faster and higher Kozue climbs the career ladder up, the more she gets confronted with the dark side of success: too high expectations, self-conceit and envy are progressing towards serious problems.

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