|Inashiro Industrial - No. 20|
|Bats:||Throws: Right |
|Education||3rd Year Junior High (debut)
1st Year High School (current)
|Manga||Act I - Chapter 378|
|Anime||S2 - Episode 43|
|Voice Actor||Yonaga Tsubasa|
Akamatsu Shinji is a student of Inashiro Industrial. He was a third year student of Ritsurin Junior High and ace of Minamisawa Senior (League).
Akamatsu has short-messy light brown hair and brown eyes. He is tall in height and always has a smile on his face.
Akamatsu watched the finals match between Seidou High and Yakushi High. He meets his fellow middle school students Yuuki, Okumura, and Seto then asks them what High School they will enroll to. While the three of them decided to go to Seidou, Akamatsu is going to Inashiro, saying that he looks forward to facing them in the future.
He goes to meet Tadano and the latter comments on how tall he's become. He offers to help Tadano with the bags Tadano carries but Tadano declines, explaining that it's a punishment. He talks to Narumiya, saying that he can't wait to play with the pitcher he respect so much. Narumiya tells him that he is well-mannered then asks his name.
After the match, he is seen talking to Okumura and Seto.
Akamatsu is currently a freshman at Inashiro Industrial. During Inashiro's third round match against Yakushi High at the Spring Tournament, while some of his teammates express concern over Yakushi's relaxed demeanor before the match, Akamatsu expresses confidence in Inashiro's roster saying that when the match begins, it'll become clear just who are the kings.
Following Inashiro's victory, Akatmatsu and his teammates Shima Ryouhei, Yoshizawa Akimitsu, Mitsuichi Youji bumps into some of Yakushi's freshmen players. Akamatsu recognizes Tomobe Sakito who tells Akamatsu that they will win next time their teams play on the field. Akamatsu replies hoping next time, they face each other on the field.
Akamatsu and Tadano played on the same team together in the past. Akamatsu appears to admire Tadano and looks forward to playing with him again.
- Akamatsu (赤松) - Japanese Red Pine
- Shinji (晋ニ) - Advancing Second
|Narumiya Mei • Shirakawa Katsuyuki • Kamiya Carlos Toshiki • Yamaoka Riku • Fukui Kento • Yabe Kouji|
|Akamatsu Shinji • Yoshizawa Akimitsu • Mitsuichi Youji • Shima Ryouhei
|Former players||Harada Masatoshi • Yoshizawa Hideaki • Hirai Tsubasa