- Ace of Diamond
- Yuki Tetsuya
- 結城 哲也
- Approx 2.5" inches
Ace of Diamond ( ダイヤのA, Daiya no Ēsu, also known as Diamond's Ace) is a Japanese shōnen baseball manga series written and illustrated by Yuji Terajima and published by Kodansha.
The series follows Eijun Sawamura, a baseball pitcher with a very unusual change of pitch that has occurred naturally. Sawamura plans to go with his friends to a local high school and play baseball to the best of their abilities. However, one scout from the prestigious Seidou High approaches him and offers him a scholarship and a chance to make it to the nationals. Sawamura decides to pay a visit to the school, and it changes his entire outlook on the future.
Tetsuya Yūki (結城 哲也, Yūki Tetsuya)
Position: First Baseman
Tetsuya was unanimously voted by his teammate to be the captain of the Seido baseball team. His motto is to 'lead by performances' as suggested by the coach. He is also the cleanup batter of the team who is able to hit a home run. Although he is a rather quiet person, his strength seems to radiate when he is in the batter box. When he first entered Seido, his generation was considered as the weakest batch by the seniors. However, he trains hard and is able to inspire other teammates. He plays shogi during his free time although Miyuki says he is still weak at it.