Ren Mihashi was the ace of his middle school's baseball team, but due to his poor pitching, they could never win. Constant losses eventually lead to his teammates bullying him and reached the point where his teammates no longer tried to win, causing Mihashi to graduate with little self-esteem. As a result, Mihashi decides to go to a high school in a different prefecture where he has no intention of playing baseball. Unfortunately, upon his arrival at Nishiura High, he is dragged into joining their new team as the starting pitcher.
Although unwilling at first, Mihashi realizes that this is a place where he will be accepted for who he is; with help from the catcher Takaya Abe, he starts to have more confidence in his own abilities. Abe, seeing the potential in Mihashi, makes it a goal to help him become a pitcher worthy of being called an ace.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Sugababes | 2011-09-16 | 60 min |
| Season 1 | Episode 2 | Joe McElderry and Six D | 2011-09-23 | 60 min |
| Season 1 | Episode 3 | Joe Swash and Nicola Roberts | 2011-09-30 | 60 min |
| Season 1 | Episode 4 | Loick Essien | 2011-10-07 | 60 min |
| Season 1 | Episode 5 | Stacey Solomon and Rizzle Kicks | 2011-10-14 | 60 min |
| Season 1 | Episode 6 | Episode 6 | 2011-10-21 | 60 min |
| Season 1 | Episode 7 | The Wanted | 2011-10-28 | 60 min |
| Season 1 | Episode 8 | Daniel Anthony and Cover Drive | 2011-11-04 | 60 min |
| Season 1 | Episode 9 | Pixie Lott | 2011-11-11 | 60 min |
| Season 1 | Episode 10 | The Saturdays | 2011-11-18 | 60 min |
| Season 1 | Episode 11 | Joe McElderry and Six D | 2011-11-25 | 60 min |
| Season 1 | Episode 12 | Oh My! | 2011-12-02 | 60 min |
| Season 1 | Episode 13 | Parade (band) | 2011-12-09 | 60 min |
| Season 2 | Episode 1 | Lawson | 2013-01-11 | 60 min |
| Season 2 | Episode 2 | Amelia Lily | 2013-01-18 | 60 min |
| Season 2 | Episode 3 | JLS and Scouting for Girls | 2013-01-25 | 60 min |
| Season 2 | Episode 4 | One Direction and Lemar | 2013-02-01 | 60 min |
| Season 2 | Episode 5 | A*M*E and Hacker T. Dog | 2013-02-08 | 60 min |
| Season 2 | Episode 6 | Conor Maynard and Flawless | 2013-02-15 | 60 min |
| Season 2 | Episode 7 | Lilygreen and Maguire | 2013-02-22 | 60 min |
| Season 2 | Episode 8 | The Mend | 2013-03-01 | 60 min |
| Season 2 | Episode 9 | Tyler James | 2013-03-08 | 60 min |
| Season 3 | Episode 1 | Akai Osei and Lucy Spraggan | 2014-01-17 | 60 min |
| Season 3 | Episode 2 | Union J, Jack Carroll and Elyar Fox | 2014-01-24 | 60 min |
| Season 3 | Episode 3 | Bobby Lockwood and Loveable Rogues | 2014-01-31 | 60 min |
| Season 3 | Episode 4 | The Vamps and Chris Johnson | 2014-02-07 | 60 min |
| Season 3 | Episode 5 | The Struts | 2014-02-14 | 60 min |
| Season 3 | Episode 6 | Jessie J, Maisie Smith and Young Kato | 2014-02-21 | 60 min |
| Season 3 | Episode 7 | The Luminites and Ceallach Spellman | 2014-02-28 | 60 min |
| Season 3 | Episode 8 | Matt Cardle and Richard & Adam | 2014-03-07 | 60 min |
| Season 3 | Episode 9 | Tich and Lawson | 2014-03-14 | 60 min |
| Season 3 | Episode 10 | Compilation episode | 2014-03-28 | 60 min |
| Season 4 | Episode 1 | Union J and The Vamps | 2014-12-15 | 60 min |
| Season 4 | Episode 2 | Union J, Jedward and Harvey | 2015-01-23 | 60 min |
| Season 4 | Episode 3 | Rough Copy, Andrew Whyment and Sam Aston | 2015-01-30 | 60 min |
| Season 4 | Episode 4 | Ward Thomas and Rachel Riley | 2015-02-06 | 60 min |
| Season 4 | Episode 5 | Bars and Melody and Zoella | 2015-02-13 | 60 min |
| Season 4 | Episode 6 | Magalie | 2015-02-20 | 60 min |
| Season 4 | Episode 7 | Ed Petrie | 2015-02-27 | 60 min |
| Season 4 | Episode 8 | Jermain Jackman | 2015-03-06 | 60 min |
| Season 4 | Episode 9 | Compilation episode | 2015-03-13 | 60 min |
| Season 4 | Episode 10 | Compilation episode | 2015-03-20 | 60 min |
| Season 4 | Episode 11 | Compilation episode | 2015-03-27 | 60 min |
| Season 5 | Episode 1 | Christmas Episode | 2015-12-18 | 60 min |
| Season 5 | Episode 2 | Peter Andre | 2016-01-15 | 60 min |
| Season 5 | Episode 3 | Joe Swash | 2016-01-22 | 60 min |
| Season 5 | Episode 4 | Nathan Sykes | 2016-01-29 | 60 min |
| Season 5 | Episode 5 | Coronation Street | 2016-02-05 | 60 min |
| Season 5 | Episode 6 | Naomi Wilkinson | 2016-02-12 | 60 min |
| Season 5 | Episode 7 | Bars and Melody | 2016-02-19 | 60 min |
| Season 5 | Episode 8 | Kimberly Wyatt | 2016-02-26 | 60 min |
| Season 5 | Episode 9 | Ed Petrie, Shannon Flynn | 2016-03-04 | 60 min |
| Season 5 | Episode 10 | Ben Shires | 2016-03-11 | 60 min |
| Season 5 | Episode 11 | Greatest Hits | 2016-03-18 | 60 min |
| Season 6 | Episode 1 | Hacker T. Dog and The Vamps | 2016-12-16 | 60 min |
| Season 6 | Episode 2 | Tom Fletcher and Ward Thomas | 2017-01-27 | 60 min |
| Season 6 | Episode 3 | The Dumping Ground and Union J | 2017-02-03 | 60 min |
| Season 6 | Episode 4 | The Tide and Olympians | 2017-02-10 | 60 min |
| Season 6 | Episode 5 | Matilda Ramsay and Gavin James | 2017-02-17 | 60 min |
| Season 6 | Episode 6 | Nikki Bella and Johnny and Inel | 2017-02-24 | 60 min |
| Season 6 | Episode 7 | Kevin Simm and School of Shame | 2017-03-03 | 60 min |
| Season 6 | Episode 8 | Ben Haenow and the Next Step | 2017-03-10 | 60 min |
| Season 6 | Episode 9 | Collabro and Leona Vaughan | 2017-03-17 | 60 min |
| Season 6 | Episode 10 | Bars and Melody | 2017-03-24 | 60 min |
| Season 6 | Episode 11 | Best of Friends | 2017-03-31 | 60 min |
| Season 7 | Episode 1 | Yes Lad | 2018-01-05 | 60 min |
| Season 7 | Episode 2 | Matt Terry | 2018-01-12 | 60 min |
| Season 7 | Episode 3 | Callum Beattie | 2018-01-19 | 60 min |
| Season 7 | Episode 4 | Jonny and Yasmin | 2018-01-26 | 60 min |
| Season 7 | Episode 5 | Jack Pack | 2018-02-02 | 60 min |
| Season 7 | Episode 6 | Shelby Bain | 2018-02-09 | 60 min |
| Season 7 | Episode 7 | Hrvy | 2018-02-16 | 60 min |
| Season 7 | Episode 8 | Roadtrip | 2018-02-23 | 60 min |
| Season 7 | Episode 9 | Misunderstood | 2018-03-02 | 60 min |
| Season 7 | Episode 10 | New Hope Club | 2018-03-09 | 60 min |
| Season 7 | Episode 11 | Series 7 Highlights | 2018-03-16 | 60 min |
| Season 8 | Episode 1 | Christmas Wind Up | 2018-12-21 | 60 min |
| Season 8 | Episode 2 | HRVY - I Wish You Were Here | 2019-01-25 | 60 min |
| Season 8 | Episode 3 | AJ Pritchard | 2019-02-01 | 60 min |
| Season 8 | Episode 4 | Madagascar | 2019-02-08 | 60 min |
| Season 8 | Episode 5 | New Hope Club | 2019-02-15 | 60 min |
| Season 8 | Episode 6 | Four of Diamonds | 2019-02-22 | 60 min |
| Season 8 | Episode 7 | Donel | 2019-03-01 | 60 min |
| Season 8 | Episode 8 | Hetty Feather and Millie Inbetween | 2019-03-08 | 60 min |
| Season 8 | Episode 9 | Max and Harvey | 2019-03-15 | 60 min |
| Season 8 | Episode 10 | HRVY - I Don't Think About You | 2019-03-22 | 60 min |
| Season 8 | Episode 11 | Samantha Harvey | 2019-03-29 | 60 min |
| Editing | Kentaro Tsubone | Assistant Editor |
| Art | Masaru Yonezawa | Prop Designer |
| Camera | Takeshi Hirooka | Director of Photography |
| Visual Effects | Kazuko Nakashima | Color Designer |
| Visual Effects | Akira Takata | Supervising Animation Director |
| Visual Effects | Junichiro Taniguchi | Supervising Animation Director |
| Art | Mutsumi Usuda | Assistant Director of Photography |
| Visual Effects | Takahiko Yoshida | Supervising Animation Director |
| Visual Effects | Takahiko Yoshida | Character Designer |
| Art | Yukihiro Shibutani | Art Direction |
| Writing | Yosuke Kuroda | Series Composition |
| Directing | Tsutomu Mizushima | Series Director |
| Editing | Shigeru Nishiyama | Editor |
| Sound | Shiro Hamaguchi | Original Music Composer |
| Sound | Hiroaki Sano | Music Producer |
| Sound | Haru Yamada | Sound Mixer |
| Sound | Tomokazu Mii | Sound Effects |
| Sound | Hiromi Kikuta | Sound Director |
