|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 student of Seidou High School and one of the second-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 are 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 maybe even on par with Chris' notes. Nabe is really grateful for something (collecting data) that he can do for the team and that 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 the same time it's at that time that 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 ... but somehow ..." - 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
|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