|Seidou High School|
|Bats: left||Throws: left|
|Date of birth||18 April|
|Height||172cm (5' 7.5")|
|Weight||58kg (127 lbs)|
|Education||2nd Year High School (debut) |
3rd Year High School (current)
|Manga||Act I - Chapter 258|
|Anime||S2 - Episode 9|
|Voice Actor||Akira Ishida|
Watanabe Hisashi is a third year student of Seidou High School and one of the 2nd string left fielders of the baseball team. He was formerly roommates with Endou Naoki.
Nabe is a lean-built teenager of average height. He has brown hair and brown eyes.
Nabe and his friends were troubled that they may not be zealous enough compared to those around and are wondering if it's okay for them to be on the team like this.
Nabe is entrusted with observing the matches of their upcoming opponents because he is good at making notes - his notes are even on par with Chris' notes. Nabe is really grateful for that he can do something (collecting data) for the team, and he was really happy when Miyuki mouthed an apology to him during the match against Ugumori because it made him feel he was a member of the team, too. But at that same time, he realized that the field, although it looks so close, feels infinitely far, and covering that long distance is beyond his abilities.
- Watanabe (渡辺) - Transient Edges
- Hisashi (久志) - Long-lived
- "They're like from a different race, after all... In comparison, we're like... just ordinary club members, I guess? At this stage, it's like you can feel the... how should I put it... the difference in the frame of mind, perhaps... Ah, it's not like we're here just to admire from afar, of course. We were prepared to these three years here being difficult..." - to Miyuki
- "Then, you've been swinging the bat for yourselves, haven't you. If there's still a flame burning here [he touches the spot where Nabe's heart is], no matter how small, don't give up. Keep practicing your swing! Do even one extra swing. Recklessly. Not just for the team but for your own sake." - Kataoka 
- "What he noticed was a very small detail, but for the team, it was a major advantage." - Kataoka
|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|