※估算 根據卷數、再版次數、連載雜誌等推算的參考值(非實測)
作品概要
A boy raised by a shogi-master finds a new passion when he encounters the sport of tennis. 0-40: a situation that requires willpower to fight through adversity. He carves out a new life for himself with "talent" and "effort," and overcomes his rivals to reach the top. (Source: Magapoke, translated)
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