Yūki Tetsuya, Diamond no Ace Wiki

Even when times are at the hardest, don't let it show on your face. If the captain is shaken, the team will waver.Yuuki to Miyuki in Succeed Yuuki Tetsuya was the captain and first baseman of the Seidou High School baseball team. He grew up in Tokyo Metropolis and graduated from Akadou Junior High. Observing the team's discipline, Yuuki decided to enroll at Seidou. While he was in junior high, he was not given much opportunity to play because of his small build despite his strong fighting spirit

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