|Seidou High School - No. 7|
|Bats: Right||Throws: Right|
|Age||17 (debut) |
|Date of birth||8 June|
|Place of birth||Saitama Prefecture|
|Height||180 cm (5' 11")|
|Weight||75 kg (165 lbs)|
|Education||3rd Year High School (debut) |
Seidou Alumnus 
|Voice Actor||Takeuchi Eiji|
Sakai Ichirou comes from Saitama prefecture and is a third year student of Seidou High School. He is a left fielder of the Seidou baseball team, and was the former roomate of Higasa Shouji. After the third years' retirement, he was roommates with Isashiki Jun and Kusunoki Fumiya.
This data is based on the official guidebook, it will only be changed if there is an official update!
You are free to write about the characters improvements in the Skills section above!
- Favorite Food: Miso Ramen 
- Best Subjects: English, Japanese History 
- The person he respects is Hayao Miyazaki. 
- His hobby is playing Battleship Mania. 
- He attended Kazama Junior High. 
- After retiring from the baseball club, he decided to stop pursuing baseball to look into other interests.
|Seidou High School|
|Miyuki Kazuya • Maezono Kenta • Kuramochi Yōichi • Kawakami Norifumi • Asou Takeru • Nakata Ataru • Ono Hiroshi • Higasa Shōji • Seki Naomichi • Yamaguchi Ken • Kijima Rei • Kawashima Kengo|
|Sawamura Eijun• Furuya Satoru • Kominato Haruichi • Kanemaru Shinji • Tōjō Hideaki • Kaneda Tadahiro|
|Yui Kaoru • Yūki Masashi • Okumura Kōshū • Mogami Takeshi • Asada Hirofumi • Seto Takuma • Kuki Yōhei
|Former players||Yūki Tetsuya • Tanba Kōichirō • Kominato Ryōsuke • Masuko Tōru • Isashiki Jun • Miyauchi Keisuke • Sakai Ichirō • Kadota Masaaki • Kusunoki Fumiya • Takigawa Chris Yū • Azuma Kiyokuni
|Managers||Fujiwara Takako • Umemoto Sachiko • Natsukawa Yui • Yoshikawa Haruno
|Staff||Kataoka Tesshin • Ochiai Hiromitsu • Takashima Rei • Kazuyoshi Oota|