Characters: Big Windup

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Nishiura High School is located in Saitama Prefecture where The Protagonist studies. Initially, this school only had softball team. Thus, at the start of the series, the baseball team consists of all freshmen players.

Mihashi Ren

Uniform Number: #1
Position: Pitcher
Voiced by: Tsubasa Yonaga (JP), Sean Michael Teague (EN)

The Protagonist. He was bullied at his former middle school due to his old teammates believing that he was made the ace through favoritism, because his family owns the school. He is actually a very talented pitcher, with a large variety of pitches and excellent control, but his pitches are slow and his talents aren't easily recognized without the cooperation of the team.

The bullying he received left him an extremely shy, nervous, stuttering emotional wreck. (He gets better.)

Abe Takaya

Uniform Number: #2
Position: Catcher
Voiced by: Yuuichi Nakamura (JP), Russell Wait (EN)

Abe is an analytical control freak with a short temper and a penchant for yelling. When he was in middle school he got partnered up with Haruna Motoki, a pitcher with great speed but no control, and who wouldn't listen to his directions. This has left him with some issues.

Abe is one of the members of the team who has had the most experience. He is good at batting as well.
  • Anger Born of Worry: Part of the reason why he snaps at Mihashi so often.
  • Berserk Button: Mihashi's sniveling pisses him off.
  • Big Eater: So much that he puts on 4kg in 3 days when healing up from an injury.
  • Chaste Hero: He's one of the only boys who aren't fantasizing about girls and, as one omake reveals, have never fallen in love. And he's the only one around completely uninterested upon the discovery that Chiyo cleans up nicely. Poor girl.
  • The Chessmaster
  • Control Freak: To the point where even if it's almost always directed at Mihashi, even the other teammates find Abe annoying.
  • Deuteragonist: The series is as much about him as it is about Mihashi.
  • Face of a Thug: More like a facial expression of a thug. Abe appears constantly irritated even when he isn't, which makes the more shy team members get timid around him.
  • Fan Nickname: Known among Japanese fans as "Kimobe" i.e. 'kimoi'(creepy)+ Abe. Comes with custom smiley: 仝ω仝
  • Gay Moment: After he tells Mihashi he likes him not just as a pitcher but as a person, Mihashi "confesses" back to him and Abe realizes how it all sounded.
  • Hair-Trigger Temper: Has a very short fuse, especially around Mihashi; and since Mihashi becomes even less communicative when shouted at...
  • Heel Realization: Realizes in episode 25 that his relationship with Mihashi is borderline abusive.
  • Heterosexual Life-Partners: With Mihashi, willingly or not. Though many times the "heterosexual" part seems debatable.
  • I Can Still Fight: After he sprains his knee in the Bijou match.
  • I'm Okay: See above.
  • Ineffectual Loner: Not in the games — he's cooperative and definitely not ineffectual — but has shades of this in his social life.
  • Lethal Chef: Since his mother is a housewife, Takaya cannot cook. Which leads to an atypical situation, where Mihashi has to tell him what to do.
  • Oblivious to Love Chiyo has a crush on him. Though to be fair, she's resolved not to show it and does a good job, so it's not his fault for not noticing.
  • NO INDOOR VOICE: Though he's working on it.
  • Not Love Interest: Half of the series focuses at the ups and downs of his relationship with Mihashi.
  • Parental Favoritism: His mother prefers her younger son Shun and will always go to Shun's games if both boys have a game on the same day.
  • It's Personal: Between him and Haruna.
  • Perpetual Frowner: His facial expressions range from indifferent to irritated (even when he doesn't actually feel it). When he demonstrated a wide grin to show his teammates what would be even better than a poker face, they were creeped out.
  • Sensitive Guy and Manly Man: The no-nonsense, bossy one, contrasting with easily frightened Extreme Doormat Mihashi.
  • Spiky Hair
  • The Strategist
  • Tareme: Although it doesn't give him a kind look, but rather an unimpressed one.
  • Tempting Fate: Makes the reckless promise not to get hurt or sick for 3 years.
  • Younger Than They Look: is one of the youngest guys on the team.

Oki Kazutoshi

Uniform Number: #3
Position: First Baseman, Reserve Pitcher, Right Fielder (vs Sakitama)
Voiced by: Yuudai Satou (JP), Chris Cason (EN)

Oki is only the left-handed player on the team. He is also one of the reserve pitchers, since he is one of the only players on the team with experience, although he was reluctant to admit it and does not wish to pitch in official games. He is shy, and classmates with Nishihiro.

Sakaeguchi Yuuto

Uniform Number: #4
Position: Second Baseman
Voiced by: Chihiro Suzuki (JP), Aaron Dismuke (EN)

Sakaeguchi is a really nice guy. He's one of the other more experienced players on the team. He and Abe attended the same middle school, but they didn't meet until the day of the entrance exams.

He is very good at bunting, and is described in canon as being closest to Suyama.

Tajima Yuuichirou

Uniform Number: #5
Position: Third Baseman, Reserve Catcher, First Baseman (vs Sakitama) , Catcher (vs Bijoudai-Sayama After Abe's injury)
Voiced by: Hiro Shimono (JP), Todd Haberkorn (EN)

Tajima is the best player on the team. He can hit with incredible accuracy, and, as he says before the very first game, he's never seen a pitch he couldn't hit by the end of a game.

He's also a hyperactive Bunny-Ears Lawyer who (tries to) strip in public and says inappropriate things occasionally.

Suyama Shoji

Uniform Number: #6
Position: Shortstop
Voiced by: Makoto Yasumura (JP), Anthony Bowling (EN)

  • Chaste Hero: Like Abe, he doesn't have erotic fantasies, he's never fallen in love and if he got a girlfriend, he would like to hold her hand (to which his teammates respond: 'So cute...').
  • The Generic Guy: Probably the least remarkable of the team members. His lack of quirks occasionally becomes a quirk for itself, when he is the only guy (or along with Abe) who isn't ticklish, doesn't have erotic fantasies, etc.
  • Holding Hands: What he'd like to do if he ever gets a girlfriend.
  • Real Men Cook: He loves to cook ever since he was in middle school. Recently, he is interested in baking and Japanese-like cuisine.

Mizutani Fumiki

Uniform Number: #7
Position: Left Fielder , Third Baseman (vs Bijoudai-Sayama After Abe's injury)
Voiced by: Sumi Ken'ichirou (JP), Jean Luc Hester (EN)

  • All Love Is Unrequited: He has a crush on Chiyo who has a crush on Abe.
  • Butt Monkey: Apart from the fanon Kusoleft (crappy left field) thing he has going on for fumbling an easy catch, he's also been mentioned to be pretty shaky at batting and worried that Nishihiro is catching up to him. Oki straight up says that the two of them are the worst at batting on the team discounting Mihashi. And since Nishihiro is smart and serious and Mihashi is the ace pitcher, and Mizutani possesses none of these attributes but has a slightly dorky personality, he really is the last in coolness order of the team.
  • In-Series Nickname: "Kuso Lefto" by Abe. He hopes to switch it to "Nice Batting".
  • The Slacker: For this team standards, anyway.

Izumi Kousuke

Uniform Number: #8
Position: Center Fielder, Third Baseman(vs Sakitama)
Voiced by: Jun Fukuyama (JP), Chris Burnett (EN)

Hanai Azusa

Uniform Number: #9
Position: Right Fielder, Center Fielder(vs Sakitama)
Voiced by: Kissho Taniyama (JP), Joel McDonald (EN)

  • Always Someone Better: Tajima is this to him.
  • Compressed Vice: Starts out as a misogynist, a trait that quickly disappears (or at least his view that women couldn't be badasses gets corrected). Although to be fair to him, many people react to Momokan being a female coach with suspicion at least.
  • Embarrassing First Name: His first name is Azusa, which is more common as a girl's name. He even makes his mom call him by his last name!
  • Gender-Blender Name: Azusa is more traditionally a girl's name.
  • Heterosexual Life-Partners: With Tajima.
  • Hot for Teacher: Sorta.
    • Has an "English teacher" fetish.
    • Appears to have a slight crush on Momokan, though she isn't technically a teacher.
  • Jerkass: Upon introduction.
  • One Head Taller: Is a full head and then some taller than Tajima. His astounding height for a first year makes him not feel intimidated by the other high schoolers at the drawing for the summer tournament because he was so tall, standing taller than most players; both older and younger.
  • The Captain
  • Team Dad: Especially evident in his interactions with Mihashi.
  • Unknown Rival: To Tajima, who has no idea that Hanai views him as Always Someone Better. Though as the time passes, Tajima starts to acknowledge his abilities more and each becomes a friendly version of The Rival to another.
  • Younger Than They Look: His height and build makes him look more like a second or third year when he's actually a first year; however, he is one of the oldest members on the team.

Nishihiro Shintarou

Uniform Number: #10
Position: Third base coach, Reserve Left Fielder , Left Fielder (vs Bijoudai-Sayama After Abe's injury)
Voiced by: Ryohei Kimura (JP), Scott Hinze (EN)

  • Academic Athlete: So smart the other members call him 'sensei' and he never has to study for tests.
  • The Generic Guy: If you see someone from Nishiura and can't identify them, it's probably him.
  • The Hopeless Replacement: Subverted. He comes on in the Bijou match and strikes out twice.
  • The Smart Guy: He's the one to go to, when the dumber guys of the team need academic tutoring.

Momoe Maria, AKA Momokan

Position: Coach
Voiced by: Risa Hayamizu (JP), Cynthia Cranz (EN)

Momokan is Nishiura's coach. She's also a graduate of Nishiura, and was the manager of the baseball club while she was a student. She works side jobs to help raise money, and also plans on spending her savings on new equipment for the team. It is later revealed that she is a trained nurse.

Shino'oka Chiyo

Position: Manager
Voiced by: Misato Fukuen (JP), Cherami Leigh (EN)

Tsuyoshi Shiga AKA Shiga-po

Faculty Supervisor
'Voiced by:Takehiro Murozono (JP), Chuck Huber (EN)

Shiga is a math teacher at Nishiura. He teaches the team meditation techniques.

Hamada Yoshirou, AKA. Hama-chan

Baseball team's Cheering Squad Leader
Voiced by: Atsushi Kisaichi (JP), Christopher Bevins (EN)

Mihoshi Academy is located in Gunma Prefecture. Mihashi studied here in middle school and played as the baseball team's starting pitcher. Due to his grandfather as the owner of the academy, his teammates thought that he got his position due to favoritism.

Kanou Shuugo

Uniform Number: #19
Position: Pitcher
Voiced by: Jun Oosuka (JP), Jamie Mc Gonnigal (EN)

Kanou is Mihashi's childhood friend. They attended Mihoshi together. Kanou was the backup pitcher on the team, and Mihashi was the reason he couldn't pitch.

Hatake Atsushi

Position: Catcher
Voiced by: Shintarou Oohata (JP), Josh Grelle (EN)

Hatake was Mihashi's catcher during middle school years and Kanou's catcher in high school. In spite of being part of the battery with Mihashi, he never acknowledged Mihashi's skill as a pitcher.

Oda Hiroyuki

Position: First Baseman
Voiced by: Jun Fukuyama (JP), Justin Cook (EN)

Tousei High School is a Christian school located in Saitama Prefecture and the previous year's champions of the Saitama Summer Tournament. The first opponent of Nishiura in this year's summer tournament.

Kawai Kazuki

Uniform Number: #2
Position: Catcher
Voiced by: Eiji Hanawa (JP), Jeff Johnson (EN)

The captain of Tousei's baseball team.

Takase Junta

Uniform Number: #10
Position: Pitcher
Voiced by: Noriaki Sugiyama (JP), Drew Wall (EN)

Pitcher and part of battery with Kawai.

Nakazawa Riou

Uniform Number: 18
Position: Reserve Catcher
Voiced by: Mamoru Miyano (JP), David Trosko (EN)

Backup catcher and the one who gives signs to the players at the bench. Younger brother of Bijoudai-Sayama's assistant coach, Roka.

    Musashino Dai Ichi 
Musashino Dai Ichi, relatively known as Musashino, is located in Saitama Prefecture. This is where Haruna, Abe's former battery partner, plays as a pitcher. The school is more known for its soccer team but the baseball team starts to be known with the addition of Haruna in the team.

Haruna Motoki

Uniform Number: #10 (former), #1 (current)
Position: Backup Pitcher (former), Pitcher (current)
Voiced by: Masaya Matsukaze (JP), Kevin M Connolly (EN)

Kaguyama Naoto

Uniform Number: #1
Position: Pitcher
Voiced by: Kiyotaka Furushima (JP), Daniel Katsük (EN)

Akimaru Kyouhei

Uniform Number: #? (former), #2 (current)
Position: Catcher
Voiced by: Makoto Ishii (JP), Jason Liebrecht (EN)

Ookawa Hironori

Uniform Number: #5
Position: Third Baseman
Voiced by: Kenji Takahashi (JP), Jerry Jewell (EN)

The captain of Musashino's baseball team.

Miyashita Suzune

Position: Manager
Voiced by: Rina Sato (JP), Kristi Kang (EN)

Sakitama is located in Saitama Prefecture. The team consists of mostly second year and with Daichi as the only first year and considered talented in baseball. They faced Nishiura in the third round of summer tournament.

  • Foil: to the Nishiura team and battery: Nishiura is a motivated team and Abe is a great pitch-caller, and Mihashi is passionate about pitching. On the other hand, the Sakitama team is so relaxed you never even see their coach. Daichi is not very good at being a catcher, and Ichihara is not that attached to being pitcher.

Ichihara Yutaka

Uniform Number: #1
Position: Right Fielder (former), Pitcher(current)
Voiced by: Hisafumi Oda (JP)

Sakitama's pitcher. Unlike Mihashi, Ichihara is the pitch-caller in his battery with Daichi.

Sakura Daichi

Uniform Number: #2
Position: Catcher
Voiced by: Fukuhara Kouhei (JP)

Daichi is Sakitama's catcher. He has a good throwing arm, but he's not a very good pitch-caller and Ichihara shakes off his signs often. Even though he is a first year, he has a large physique compared to his other teammates, but despite his size he actually cries really easily and worries a lot.

Sawamura Masato

Uniform Number: #3
Position: First Base

Oyama Hiroki

Uniform Number: #6
Position: Shortstop

Bijoudai-Sayama, usually referred as Bijou, is a boys' school located in Saitama Prefecture. The baseball team does not have relatively skilled pitchers, thus they use multiple pitchers in a single game.

Kurata Takeshi

Uniform Number: #2
Position: Catcher
Voiced by: Higuchi Tomoyuki (JP)

Nakazawa Roka

Assistant Coach
Voiced by: Kenji Hamada (JP)


Ruri Mihashi

Voiced by: Marina Inoue (JP), Monica Rial (EN)

Mihashi's cousin. He lived with her family while he was going to Mihoshi. He told her not to come to his middle school baseball games.

Alternative Title(s):

Ookiku Furikabutte