Series running about half the length of the standard 24-26 (depending on holidays) episode season. These shows are Short Runners
, but for these, that was never a bad thing. Scheduled for a 3-month airing slot if aired weekly.note
This format became popular (see 12
) the second half of the Turn of the Millennium
as a compromise to the often sporadic nature of OVAs
and the longer, sometimes filler-ridden, standard season. Being a smaller time investment and financial risk, it is much easier to determine if a show will be successful; or, if it isn't, to not take on as much of a loss.
For this reason, many Western live-action shows have adopted this schedule, at least at first (see the link in the next paragraph).
Shows that are successful often get another (12/13-episode) season, essentially achieving a "normal" length. When released on DVD, a bonus episode is often included, making the set a Bonus Episode
. The American equivalent to this process is Front 13, Back 9
Most of these series tend to air at Otaku O'Clock
. See also British Brevity
An increasing number of anime series specifically geared toward otaku (most of them part of the NoitaminA programming block) are airing single seasons of eleven
episodes. Although rare, it is also not unheard of for a series to contain fourteen
episodes in its original broadcast. These are also listed below.
The approximately twelve-episode format is also commonly called '1-cour' or simply 'cour' which is shorter than 'Twelve-Episode Anime' and less ambiguous than a 'season', which are usually used for installments in the series. Likewise, a standard 24-26 episode run would be '2-cour' and so on. 'Cour' (kuuru/クール), probably from the French cours
, is a jargon term used in the Japanese broadcasting industry referring to these periods of time both in production and as they are generally scheduled by TV stations.
The only really downside to this format is that if the anime if based on a manga that's still running and unlikely to receive a second season, expect a Gecko Ending
Series with 12 episodes
- .hack//Legend of the Twilight Bracelet is 12 episodes long, but was also an adaptation of a monthly serial.
- Another: It has 12 episodes, but also has a (somewhat spoiler-filled) OVA which even uses the same opening and ending credits. Since it chronologically happens before and during the events of the first episode, it could in some regards also be looked at as a 13 episode anime.
- Amnesia (Otome)
- Ao Haru Ride
- Arcana Famiglia, with an extra OVA.
- Asobi ni Iku yo! plus an OVA
- Black Blood Brothers
- Black Lagoon had two seasons of this kind, the second called "The Second Barrage".
- BlazBlue: Alter Memory
- Boku wa Tomodachi ga Sukunai
- Boogiepop Phantom
- Chuunibyou Demo Koi ga Shitai!. It was announced in 2013 that this show will have a second season of as-yet unknown length.
- Cowboy Bebop in its initial airing was 12 stand-alone episodes and a filler "recap" episode, due to it being too violent for its time slot. The rest of the series was made at the time, but they decided to leave out the more violent episodes for the first run.
- Daily Lives of High School Boys
- Dancougar Nova: The last half especially feels very rushed and underdeveloped.
- Dance in the Vampire Bund
- Darker Than Black's second season fits, but not the first season and its 24 episodes.
- Deadman Wonderland
- Denpa Onna to Seishun Otoko
- Devil May Cry: The Animated Series
- Dragon Crisis!
- ef - a tale of memories and its sequel ef. A Tale of Melodies
- El Hazard: The Alternative World
- Fortune Arterial: Akai Yakusoku
- Full Metal Panic? Fumoffu had 12 episodes produced, with several split into two half-episodes. Two half-episodes were pulled from broadcast due to a kidnapping plot that had parallels in Real Life at the time.
- Freezing plus two OVA episodes.
- Futakoi Alternative and its predecessor Futakoi.
- Ga-Rei Zero-
- The "La Verite" remake of Hanaukyō Maid Tai has 12 episodes. So far, no sign of a second season.
- He Is My Master (No sequel series yet)
- All four seasons of Hidamari Sketch: the first has 12, the second has 13, the third and fourth 12 again. However, between the DVD-only bonus episodes, and some TV specials broadcast some months after the main series run, the totals are 14 per season (or 16 for the third season if one counts the TV specials as part of it).
- Highschool of the Dead plus an OVA episode.
- Ichigo Mashimaro. Two OVA series, one with three episodes, the other with two, were made after the TV series, so there are now 17 episodes of Ichigo Mashimaro.
- Infinite Stratos, not counting the OVA.
- Innocent Venus: unfortunately because of some bad pacing the middle was painfully slow but the later episodes felt too rushed.
- Iron Man
- Kamen no Maid Guy has one 12-episode season so far, but there's rumors of another one following soon.
- Kami-sama no Inai Nichiyoubi: Plus a bonus unaired 13th episode.
- Kamisama No Memochou
- Kannazuki no Miko, and quite a few other works originally created by Kaishaku, for example:
- Kashimashi: Girl Meets Girl
- Koihime†Musou. All 3 seasons have 12 episodes.
- Kore wa Zombie desu ka? plus one OVA episode.
- Kure Nai
- Legend Of Himiko
- Loveless. The manga has 9 volumes, still ongoing.
- Mahoromatic got 12; its sequel series (subtitled Something More Beautiful) got 14.
- Mahou Tsukai Ni Taisetsu Na Koto
- Mahou Tsukai Ni Taisetsu Na Koto Natsu No Sora
- Makai Senki Disgaea, the anime based loosely on the game.
- Manabi Straight plus an OVA, which takes place between the 6th and 7th episodes, to make this series 13 episodes when counted.
- Maria-sama Ga Miteru and its second season Maria-sama ga Miteru Haru.
- Which is itself a spinoff of eleven-ep show Ayakashi: Samurai Horror Tales (and more specifically, the three-episode "Bakeneko" arc).
- Najica Blitz Tactics
- Nanatsuiro Drops
- Nightwalker: A unique case, as the first four episodes were originally released as an OVA series. The following eight episodes were then aired as a television series.
- Ninin Ga Shinobuden, a.k.a (Ninja Nonsense and 2x2=Shinobuden)
- Please Teacher! and Onegai Twins are twelve episode animes, with one-episode OVAs each.
- Ore no Imouto ga Konna ni Kawaii Wake ga Nai! has twelve broadcast episodes plus four OVA episodes.
- Princess Princess ran for 12 episodes following three of the five volumes of manga. No word yet on whether the manga sequel, Princess Princess Plus will be getting an anime adaptation.
- Prism Ark
- Puella Magi Madoka Magica
- Queen's Blade
- Ride Back
- Rocket Girls
- Rozen Maiden and its sequel series, Rozen Maiden Traumend.
- Sacred Seven
- Sakamichino Apollon
- Say I Love You
- All three Sayonara, Zetsubou-Sensei seasons are 12-13 episodes long.
- Sengoku Basara's first two seasons, including a pair of OVAs.
- Seraphim Call makes good use of this format, devoting one episode to each of its 11 central characters and having them all meet in the last one.
- School Days, along with two OVAs
- Shingetsutan Tsukihime
- Somedays Dreamers
- So Ra No Wo To
- Taishou Yakyuu Musume
- Tasogare Otome X Amnesia
- Togainu no Chi
- Ultraman Neos: 12 episodes plus a special OVA.
- Umi Monogatari
- Uta Kata, which also had a postlude OVA.
- Venus Versus Virus had 12 episodes...but ended on a cliffhanger.
- Wandering Son. It's a Twelve Episode Anime, with only eleven episodes being broadcast on television and one unreleased one being added onto the Blu-Ray.
- The World God Only Knows had two seasons 12 episodes long each.
- Yami to Boushi to Hon no Tabibito
- Yosuga no Sora
- Xenosaga: The Animation
Series with 11 episodes
Series with 13 episodes
- AIR TV: though it had 13 episodes, the last was a Recap Episode and generally discounted.
- The Recap Episode wasn't even included in the FUNimation English DVD release.
- There are also two OVA episodes called AIR in Summer.
- Akane-iro ni Somaru Saka — thirteen episodes plus a Fanservice OAV.
- Angel Beats!, which was supposed to have 26 episodes and was unexpectedly cut down to 13. A bonus OVA was released later, and the disk set came with an unaired Bizarro Episode.
- Baccano! got 13, although episodes 14-16 were released later as bonus material.
- Baka and Test: Summon the Beasts ran for two seasons, and each season contained 13 episodes.
- The Big O, though it was later renewed for a second season.
- The Big O is notable for being one of the first Twelve Episode Anime to get a second season, picking up where the first one left off, after a lengthy break, something which was almost unheard of in the anime industry at the time.
- Birdy the Mighty Decode got 13 episodes; its second season got 12.
- Blue Drop
- Bottle Fairy
- The Monkey Punch anime Cinderella Boy. The series ended whilst Ranma/Rella's daily "Freaky Friday" Flip still wasn't resolved and originally suggested an upcoming new season. Unfortunately, the high cost caused the series to be put to a premature end.
- The anime of Danganronpa, which suits the series just fine.
- The original series Deep Love was thirteen episodes, while the spin-off Deep Love ~Host~ ran for twelve.
- The anime of Devil Survivor 2
- Digimon Adventure started as this, as a spinoff to the original Digimon Adventure movie (the first part of Digimon: The Movie as shown in North America), but it did well enough to warrant the rest of the 54 total episodes. Considering how self-contained the File Island arc is, it shows.
- Divergence Eve has two thirteen-episode seasons.
- Earth Maiden Arjuna
- Elfen Lied is a Thirteen Episode Anime, plus the 14th DVD-only episode.
- Figure17 has 13 episodes, but is somewhat unique in that each episode is 45 minutes long, and one episode was shown each month during its first airing. As such, the anime takes significantly more time exploring and developing its characters, has a gentler pace, and animation and art that's practically OVA quality.
- It was later rebroadcast as a standard 26 episode show, with each episode cut in half.
- Full Metal Panic! The Second Raid had 13 episodes, with a separate 30 minute OAV produced afterwards.
- Gravitation, 13, cut so heavily it would need a sequel series to bridge the gap to the manga's sequel series...
- Gunslinger Girl, with 13 episodes and a 13-episode sequel, as well as a 2-episode OVA.
- Haibane Renmei, written by Lain's character designer Yoshitoshi ABe, is also a 13-episode series.
- Hellsing got 13 episodes. It needed more to tell the story it was trying to.
- That's only because the author pulled the plug on it because he apparently didn't like where it was going. All funding was cut around episode 10-11, and they had just enough to wrap up the series in the next two-three episodes.
- Hellsing TV never had a chance, honestly. It was commissioned when the (monthly) comic had been around for less than a year. It Overtook the Manga after just seven episodes (incidentally before it was clear who the antagonist was), and the creator apparently gave zero guidance as to how the story should proceed, leading to the deeply unpopular ending. The show never had much of a budget to begin with, and cutting that only made matters worse.
- Hikonin Sentai Akibaranger is a rare live action example. Interestingly, it was originally supposed to be a one season show with twelve episodes, but the budget increased for one more episode. Then, a second season was made that also lasted thirteen episodes.
- Hyakko' has 13 episodes and a short 12-minute-long OVA.
- The first Kanon TV adaptation is 13 episodes long plus a special. The KyoAni remake was a full season with 24 episodes.
- Ikkitousen's first season. Its second season had only 12.
- Il Sole penetra le Illusioni: Plus an unaired 14th episode that serves as a prequel.
- Jubei Chan: Secret of the Lovely Eyepatch and the second season Counter Attack of the Siberia Yagyu.
- Kazemakase Tsukikage Ran
- Key the Metal Idol — though it came out as a total of 15 episodes: 13 regular, plus two "movies".
- Android Kikaider: The Animation has 13 episodes once "recap episode" #8 is added in. However, this episode was not shown during Kikaider's Adult Swim run, nor was it put onto DVD.
- The TV series is followed up by a 4-episode OVA, loosely based on the Kikaider 01 tokusatsu series.
- Kino's Journey is another 13-episode series.
- Kokoro Library
- Legends Of The Dark Kings (aka Ten no Haoh), a 13-episode anime adaptation of a manga spinoff of Fist of the North Star that centers around Raoh.
- Lupin III: The Woman Called Fujiko Mine (the "12th" episode is a two-parter, making 13 episodes in total)
- Magical Girl Lyrical Nanoha and its sequel series Magical Girl Lyrical Nanoha A's compacted 26 episodes of plot into 13 high-pressure episodes; however, Magical Girl Lyrical Nanoha StrikerS was the standard length (and pace) of a 26 episode series.
- Mayoi Neko Overrun has twelve episodes plus a metafictional thirteenth episode of the characters doing commentary on the series.
- Mezzo DSA
- Midori no Hibi got 13 episodes (which is probably why two major characters from the manga, Lucy and Nao, were left out).
- Manga//Narutaru got 13 episodes. 13 episodes that literally left out half the plot of the manga it's based on.
- Neo Angelique: The Anime of the Game Spin-Off is two sets of 13 episodes.
- Now and Then, Here and There
- Oku-sama wa Mahou Shoujo
- Panty & Stocking with Garterbelt, though Gainax apparently has a second season planned, although it's very unlikely to happen as the series creator left Gainax to create Studio Trigger.
- Parallel Trouble Adventure Dual has thirteen episodes, plus a special.
- Paranoia Agent
- Sands of Destruction
- Saishuu Heiki Kanojo (Saikano / She, the Ultimate Weapon)
- Sasameki Koto
- Seikimatsu Occult Gakuin
- Serial Experiments Lain, true to its indie nature, is a thirteen-episode series.
- Shinrei Tantei Yakumo
- The Silver Brumby's only season had 13 episodes.
- Soukou No Strain
- Spice and Wolf had 13 episodes, with the 7th episode being DVD-only. The second season had 12 episodes, with an epilogue to the last season as an episode 0 on DVD.
- Starship Operators
- Stratos 4 has 13 episodes in its first season. It's second season has 6 episodes plus a 2-episode OVA, and there is another intermediary two-part OVA.
- To Heart
- To Heart 2 as well, however, it has a three part OVA, and a two part OVA spinoff To Heart 2: Another Days, which is loosely based on the Gaiden Game spinoff of the same title.
- Tona Gura has 13 episodes with a semi-firm conclusion. That said, the manga is still ongoing, and whether or not this conclusion is used remains up in the air. Up until 2009, manga chapters tended to be fully fleshed, expanded versions of the anime episodes.
- White Album 2
- Windy Tales
- Vandread first aired with 13 episodes, but managed to get a second 13 episodes and resolve the story. There's rumors of a third season, but aren't there always?
- Yami No Matsuei
- Zero no Tsukaima has 13 episodes, although its two sequel seasons have 12 each.
Series with 14 episodes
- ARIA The ANIMATION and The ORIGINATION (Season One and Season Three) are both 13 Episodes in length whereas ARIA The NATURAL (Season Two) is 26 episodes long.
- Asagiri no Miko has 26 episodes, but each is under a quarter of an hour long, half the "standard" episode length.
- Ayakashi: Samurai Horror Tales is an unusual case; it's a 12-episode series and was aired as such on Japanese television, but is actually an anthology consisting of three separate 4-episode anime by completely different production groups. (The final series in the anthology, "Bakeneko", ended up with its own spinoff—Mononoke, also a 12-ep series.)
- Blue Literature follows the same format, with five arcs adapted from Japanese literature.
- Black★Rock Shooter is eight episodes long, and was aired in Noitamin A. If you count the OVA (which was released two years earlier and is in a separate continuity), then it had nine episodes in total.
- As mentioned in the main article, many live-action Western shows are adopting this, such as NBC's Chuck. During the 2007-2008 season, however, a lot of this was the unintentional result of that season's Writer's Strike.
- Fate/Zero's first season has 13 episodes, but it's effectively 14 episodes, because the first episode is 45 minutes long. This was apparently done to get the humongous amount of prologue exposition (for a show which is itself a prologue for an entire franchise) out of the way in the first episode. The second season is a normal 13 episode season.
- Kamichu! had 12 to start, with four DVD-only episodes interspersed between the broadcast episodes. (A ploy to get people to buy the DVDs, as the DVD-only episodes are not strictly filler.)
- K-On!'s first two arcs are only twelve episodes, but the show ended with a special episode outside of the second arc. Then it skyrocketed in popularity, and the second season got 26 episodes.
- Kokoro Connect has 13 episodes, but with 4 OVAs on the way in 2013, it's an amount of 17 episodes altogether.
- Princess Tutu was a VERY odd variation on this in its original TV broadcast. The first 13 episodes of the series were the standard 30 minutes each, but a time-slot change beginning with episode 14 lead to the running time being halved and the latter half of the series airing as 24 episodes of 15 minutes each - until the final episode, which was again 30 minutes long. Even more strange is that there was no gap in airing between the "seasons" - the 15-minute episode 14 aired the week after the full-length 13. Confused yet? The DVD release restored the split episodes into 30-minute ones, making it look like a 26-episode series to those who don't know its broadcast history. Of course, there were also the three TV specials produced...
- The fourth season of Slayers ending up being split into two 13-episode seasons instead of one 26-episode season. Of course, Revolution leaves a lot of plot threads for Evolution-R to pick up, but season five did get a new OP and ED...
- This isn't too dissimilar to how previous series of Slayers played out: typically, The Dragon would be fought by Episode 13, and from episode 14 onwards, the focus would shift to The Man Behind the Man or some other Big Bad therein.
- It has, however, been packaged together in Japan and elsewhere, and is often referred to as Revolution-R for simplicity's sake.
- The Legend of Korra was going to be the Western Animation version of this. Was being the keyword because it quickly got picked up for a second season of fourteen episodes, and then later another twenty-six episodes. On the other hand, the first season was still similar, being very self-contained.