Series running about half the length of the standard 24-26 (depending on holidays) episode season. These shows are ShortRunners, but for these, that was never a bad thing. Scheduled for a 3-month airing slot if aired weekly.[[note]]Japanese television has four general "windows" in which to premier a series, and (like most things Japanese) these windows are quite rigid. They are the first week(-ish) of January, April, July, and October; these form the "Winter", "Spring", "Summer", and "Fall" seasons respectively. So, if an anime first premiered in "Fall 2011", that means it began in October of that year. Traditionally, the Fall and Spring windows are considered more important by networks and Winter by far the least important.[[/note]]

This format became popular (see [[http://www.google.com/search?q=site%3Aanimenewsnetwork.com+inurl%3A%22encyclopedia%2Fanime.php%22+%22Number+of+episodes%3A+12%22 12]] and [[http://www.google.com/search?q=site%3Aanimenewsnetwork.com+inurl%3A%22encyclopedia%2Fanime.php%22+%22Number+of+episodes%3A+13%22 13]]) the second half of the TurnOfTheMillennium as a compromise to the often sporadic nature of {{OVA}}s 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 BonusEpisode. The American equivalent to this process is Front13Back9.

Most of these series tend to air at OtakuOClock. See also BritishBrevity.

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 GeckoEnding.

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!Series with 12 episodes

* ''Manga/DotHackLegendOfTheTwilight Bracelet'' is 12 episodes long, but was also an adaptation of a monthly serial.
* ''{{Literature/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.
* ''VideoGame/AmnesiaOtome''
* ''Manga/AoHaruRide''
* ''VideoGame/ArcanaFamiglia'', with an extra OVA.
* ''LightNovel/AsobiNiIkuYo'' plus an OVA
* ''Anime/BenTo''
* ''Manga/BlackBloodBrothers''
* ''Manga/BlackLagoon'' had two seasons of this kind, the second called "The Second Barrage".
* ''Anime/BlazBlueAlterMemory''
* ''Anime/BloodC''
* ''LightNovel/BokuWaTomodachiGaSukunai''
* ''Anime/BoogiepopPhantom''
* ''VisualNovel/ChaosHead''
* ''LightNovel/ChuunibyouDemoKoiGaShitai''. It was announced in 2013 that this show will have a second season of as-yet unknown length.
* ''Anime/CowboyBebop'' 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.
* ''LightNovel/CubeXCursedXCurious''
* ''Manga/DailyLivesOfHighSchoolBoys''
* ''Anime/DancougarNova:'' The last half especially feels very rushed and underdeveloped.
* ''Manga/DanceInTheVampireBund''
* ''Anime/DarkerThanBlack'''s second season fits, but not the first season and its 24 episodes.
* ''Manga/DeadmanWonderland''
* ''LightNovel/DenpaOnnaToSeishunOtoko''
* ''Anime/DevilMayCryTheAnimatedSeries''
* ''LightNovel/DragonCrisis''
* ''VisualNovel/EfATaleOfMemories'' and its sequel ''ef. A Tale of Melodies''
* ''[[Anime/ElHazardTheMagnificentWorld El Hazard: The Alternative World]]''
* ''VisualNovel/FortuneArterial: Akai Yakusoku''
** ''VideoGame/YoakeMaeYoriRuriIroNa ~Crescent Love~'' is an earlier example of one of August's {{Visual Novel}}s [[AnimatedAdaptation adapted]] into a TwelveEpisodeAnime.
* ''Anime/FullMetalPanicFumoffu'' had 12 episodes produced, with several split into two half-episodes. Two half-episodes were [[TooSoon pulled from broadcast due to a kidnapping plot that had parallels in]] RealLife at the time.
* ''Manga/{{Freezing}}'' plus two OVA episodes.
* ''Anime/FutakoiAlternative'' and its predecessor ''Anime/{{Futakoi}}''.
* ''Anime/GaReiZero''
* ''Anime/{{Grenadier}}''
* The "La Verite" remake of ''Anime/HanaukyoMaidTai'' has 12 episodes. So far, no sign of a second season.
* ''Manga/HeIsMyMaster'' (No sequel series yet)
* All four seasons of ''Manga/HidamariSketch'': 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).
* ''Manga/HighschoolOfTheDead'' plus an {{OVA}} episode.
* ''Manga/{{Hitohira}}''
* ''Manga/IchigoMashimaro''. 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.
* ''LightNovel/InfiniteStratos'', not counting the OVA.
* ''Anime/InnocentVenus'': unfortunately because of some bad pacing the middle was painfully slow but the later episodes felt too rushed.
* ''Anime/IronMan''
* ''Anime/{{Kaiba}}''
* ''Manga/KamenNoMaidGuy'' has one 12-episode season so far, but there's rumors of another one following soon.
* ''LightNovel/KamisamaNoInaiNichiyoubi'': Plus a bonus unaired 13th episode.
* ''LightNovel/KamisamaNoMemochou''
* ''Manga/KannazukiNoMiko'', and quite a few other works originally created by Kaishaku, for example:
** ''Magical Nyan Nyan Taruto''
** Both ''Anime/UFOUltramaidenValkyrie'' TV series.
** ''Anime/ShatteredAngels''
* ''Manga/KashimashiGirlMeetsGirl''
* ''LightNovel/{{Katanagatari}}''
* ''VisualNovel/KoihimeMusou''. All 3 seasons have 12 episodes.
* ''LightNovel/KoreWaZombieDesuKa'' plus one {{OVA}} episode.
* ''Manga/{{Kotoura-san}}''
* ''LightNovel/KureNai''
* ''Literature/{{Kurozuka}}''
* ''Anime/LegendOfHimiko''
* ''Manga/{{Loveless}}''. The manga has 9 volumes, still ongoing.
* ''Manga/{{Mahoromatic}}'' got 12; its sequel series (subtitled ''Something More Beautiful'') got 14.
* ''Manga/MahouTsukaiNiTaisetsuNaKoto''
* ''Manga/MahouTsukaiNiTaisetsuNaKotoNatsuNoSora''
* ''Makai Senki Franchise/{{Disgaea}}'', the [[AnimeOfTheGame anime based loosely on the game]].
* ''Anime/ManabiStraight'' plus an OVA, which takes place between the 6th and 7th episodes, to make this series 13 episodes when counted.
* ''Manga/MariaHolic''
* ''LightNovel/MariaSamaGaMiteru'' and its second season ''Maria-sama ga Miteru Haru''.
* ''LightNovel/{{MM}}''
* ''Anime/{{Mononoke}}''
* ''Anime/NajicaBlitzTactics''
* ''VisualNovel/NanatsuiroDrops''
* ''Anime/{{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.
* ''Manga/NininGaShinobuden'', a.k.a (''Ninja Nonsense'' and ''2x2=Shinobuden'')
* ''Anime/PleaseTeacher'' and ''OnegaiTwins'' are twelve episode animes, with [[BonusEpisode one-episode]] {{OVA}}s each.
* ''LightNovel/OreNoImoutoGaKonnaNiKawaiiWakeGaNai'' has twelve broadcast episodes plus four {{OVA}} episodes.
* ''Anime/{{Potemayo}}''
* ''Manga/PrincessPrincess'' 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.
* ''VideoGame/PrismArk''
* ''Anime/PuellaMagiMadokaMagica''
* ''Anime/QueensBlade''
* ''Manga/RideBack''
* ''Anime/RocketGirls''
* ''Manga/RozenMaiden'' and its sequel series, ''Rozen Maiden Traumend''.
* ''Anime/SacredSeven''
* ''Manga/SakamichinoApollon''
* ''Manga/SayILoveYou''
* All three ''Manga/SayonaraZetsubouSensei'' seasons are 12-13 episodes long.
* ''VideoGame/SengokuBasara'''s first two seasons, including a pair of [=OVA=]s.
* ''Anime/SeraphimCall'' 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.
* ''VisualNovel/SchoolDays'', along with two {{OVA}}s
* ''[[VisualNovel/{{Tsukihime}} Shingetsutan Tsukihime]]''
* ''Anime/{{Sola}}''
* ''Manga/SomedaysDreamers''
* ''Anime/SoRaNoWoTo''
* ''Anime/TaishouYakyuuMusume''
* ''Manga/TasogareOtomeXAmnesia''
* ''VisualNovel/TogainuNoChi''
* ''Anime/{{Tsuritama}}''
* ''Series/UltramanNeos'': 12 episodes plus [[BonusEpisode a special OVA]].
* ''Anime/UmiMonogatari''
* ''Anime/UtaKata'', which also had a postlude OVA.
* ''Manga/VenusVersusVirus'' had 12 episodes...but ended on a {{cliffhanger}}.
* ''Manga/WanderingSon''. It's a TwelveEpisodeAnime, with only eleven episodes being broadcast on television and one unreleased one being added onto the Blu-Ray.
* ''Anime/{{Wolverine}}''
* ''Manga/TheWorldGodOnlyKnows'' had two seasons 12 episodes long each.
* ''VisualNovel/YamiToBoushiToHonNoTabibito''
* ''VisualNovel/YosugaNoSora''
* ''Anime/{{Yumeria}}''
* ''[[VideoGame/{{Xenosaga}} Xenosaga: The Animation]]''

!Series with 11 episodes

* ''Manga/AoiHana''
* ''Anime/AnoHiMitaHanaNoNamaeOBokutachiWaMadaShiranai''
* ''Manga/BunnyDrop''
* ''Anime/CTheMoneyAndSoulOfPossibility ''
* ''Anime/EdenOfTheEast'': 11 episodes and two movies.
* ''Anime/{{Fractale}}''
* ''Anime/HandMaidMay'' (one of the earliest examples, first aired in 2000)
* ''Manga/HakabaKitaro''
* ''Manga/JyuOhSei''
* ''Literature/TheTatamiGalaxy''
* ''Manga/{{Kuragehime}}'', although [[spoiler: the extremely open-ended "finale" leaves a lot of plot threads unresolved. Second season, anyone?]]
* ''Manga/{{Moyashimon}}''
* ''Manga/SilverSpoon'', two 11-episode seasons.
* ''Anime/TokyoMagnitude8''
* ''Literature/{{Trapeze}}''
** All of the above were aired on {{noitaminA}}, which does this often. (If you know what the programming block does during the gaps between series, please replace this parenthetical note with that information.)
* ''{{LightNovel/No6}}''
* ''LightNovel/{{Kampfer}}'' is an odd case; it's 12 episodes, but it's basically an 11 episode series with episode 12 being a fanservicey, non-continuity [[BonusEpisode bonus episode]] that's aired after the ending [[GeckoEnding such as it is]].
* ''Series/UltramanGinga'': 11 episodes and two movies.
* ''Manga/ZombieLoan'' plus two DVD episodes.

!Series with 13 episodes

* ''VisualNovel/{{AIR}}'' TV: though it had 13 episodes, the last was a RecapEpisode and generally discounted.
** The RecapEpisode wasn't even included in the FUNimation English DVD release.
** There are also two {{OVA}} episodes called ''AIR in Summer''.
* ''VisualNovel/AkaneIroNiSomaruSaka'' -- thirteen episodes plus a {{Fanservice}} OAV.
* ''Anime/AngelBeats'', which was supposed to have 26 episodes and [[ExecutiveMeddling was unexpectedly cut down to 13.]] A [[BonusEpisode bonus OVA]] was released later, and the disk set came with an unaired BizarroEpisode.
* ''LightNovel/{{Baccano}}'' got 13, although episodes 14-16 were released later as bonus material.
* ''LightNovel/BakaAndTestSummonTheBeasts'' ran for two seasons, and each season contained 13 episodes.
* ''Anime/TheBigO'', 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.
* ''Anime/BirdyTheMighty Decode'' got 13 episodes; its second season got 12.
* ''Manga/BlueDrop''
* ''Anime/BottleFairy''
* ''Anime/{{Canaan}}''
* The Creator/MonkeyPunch anime ''Anime/CinderellaBoy''. The series ended [[spoiler: whilst Ranma/Rella's daily FreakyFridayFlip 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 ''VisualNovel/{{Danganronpa}}'', [[ThirteenIsUnlucky which suits the series just fine]].
* The original series ''Literature/DeepLove'' was thirteen episodes, while the spin-off ''Deep Love ~Host~'' ran for twelve.
* The anime of ''VideoGame/DevilSurvivor2''
* ''Anime/DivergenceEve'' has two thirteen-episode seasons.
* ''Anime/EarthMaidenArjuna''
* ''Manga/ElfenLied'' is a ThirteenEpisodeAnime, plus [[BonusEpisode the 14th DVD-only episode]].
* ''Anime/{{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.
* ''Anime/{{Flag}}''
* ''[[LightNovel/FullMetalPanic Full Metal Panic! The Second Raid]]'' had 13 episodes, with a separate 30 minute {{OAV}} produced afterwards.
* ''Manga/{{Gravitation}}'', 13, cut so heavily it would need a sequel series to bridge the gap to the manga's sequel series...
* ''Manga/GunslingerGirl'', with 13 episodes and a 13-episode sequel, as well as a 2-episode OVA.
* ''Anime/HaibaneRenmei'', written by ''Lain''[='=]s character designer Yoshitoshi [=ABe=], is also a 13-episode series.
* ''Anime/{{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 OvertookTheManga after just seven episodes (incidentally ''before'' it was clear who [[ThoseWackyNazis 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.
* ''Series/HikoninSentaiAkibaranger'' 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 ''VisualNovel/{{Kanon}}'' TV adaptation is 13 episodes long plus a special. The [[KyotoAnimation KyoAni]] remake was a full season with 24 episodes.
* ''Manga/{{Ikkitousen}}'''s first season. Its second season had only 12.
* ''Anime/IlSolePenetraLeIllusioni'': Plus an unaired 14th episode that serves as a prequel.
* ''Anime/JubeiChan: Secret of the Lovely Eyepatch'' and the second season ''Counter Attack of the Siberia Yagyu''.
* ''Anime/{{K}}''
* ''Manga/{{Kannagi}}''
* ''Anime/KazemakaseTsukikageRan''
* ''Anime/KeyTheMetalIdol'' -- though it came out as a total of 15 episodes: 13 regular, plus two "movies".
* ''[[Series/{{Kikaider}} 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.
* ''LightNovel/KinosJourney'' is another 13-episode series.
* ''Kokoro Library''
* ''LegendsOfTheDarkKings'' (aka ''Ten no Haoh''), a 13-episode anime adaptation of a manga spinoff of ''FistOfTheNorthStar'' that centers around [[BigBad Raoh]].
* ''Anime/LupinIIITheWomanCalledFujikoMine'' (the "12th" episode is a two-parter, making 13 episodes in total)
* ''Anime/MagicalGirlLyricalNanoha'' and its sequel series ''Anime/MagicalGirlLyricalNanohaAs'' 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.
* ''LightNovel/MayoiNekoOverrun'' has twelve episodes plus a {{metafiction}}al thirteenth episode of the characters doing commentary on the series.
* ''Anime/MezzoDSA''
* ''Manga/MidoriNoHibi'' 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.
* ''Anime/NieaUnder7''
* ''VideoGame/NeoAngelique'': TheAnimeOfTheGame SpinOff is two sets of 13 episodes.
* ''Anime/NowAndThenHereAndThere''
* ''Anime/OkusamaWaMahouShoujo''
* ''Anime/PantyAndStockingWithGarterbelt'', though {{Gainax}} apparently has a second season planned, although it's very unlikely to happen as the series creator left Gainax to create Creator/StudioTrigger.
* ''Anime/ParallelTroubleAdventureDual'' has thirteen episodes, plus a special.
* ''Anime/ParanoiaAgent''
* ''Manga/{{Pretear}}''
* ''Anime/SandsOfDestruction''
* ''[[Manga/{{Saikano}} Saishuu Heiki Kanojo]]'' (''Saikano'' / ''She, the Ultimate Weapon'')
* ''Manga/SasamekiKoto''
* ''Anime/SeikimatsuOccultGakuin''
* ''Anime/SerialExperimentsLain'', true to its indie nature, is a thirteen-episode series.
* ''Literature/ShinreiTanteiYakumo''
* ''TheSilverBrumby'''s [[ShortRunner only season]] had 13 episodes.
* ''Anime/SoukouNoStrain''
* ''LightNovel/SpiceAndWolf'' had [[BonusEpisode 13 episodes]], with the 7th episode being DVD-only. The second season had 12 episodes, with an epilogue to the last season as an [[BonusEpisode episode 0]] on DVD.
* ''Anime/StarshipOperators''
* ''Anime/{{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.
* ''VisualNovel/ToHeart''
** ''VisualNovel/ToHeart2'' 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 GaidenGame spinoff of the same title.
* ''Manga/{{Tokko}}''
* ''Anime/TonaGura'' 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.
* ''VisualNovel/WhiteAlbum2''
* ''Anime/WindyTales''
* ''Manga/{{Working}}''
* ''Anime/{{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?
* ''Manga/YamiNoMatsuei''
* ''LightNovel/ZeroNoTsukaima'' has 13 episodes, although its two sequel seasons have 12 each.

!Series with 14 episodes

* The initial run of ''[[LightNovel/HaruhiSuzumiya The Melancholy Of Haruhi Suzumiya]]'' got 14. The second season also has 14 episodes (a total run of 28, including the first season).
** One of the first season's episodes is the NonIndicativeFirstEpisode, which is a "movie" created by the SOS club rather than a normal episode.
** Also consider that 8 of 14 episodes in season two [[GroundhogDayLoop are generally the same]].

!Odd cases

* ''Manga/{{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.
* ''Manga/AsagiriNoMiko'' has 26 episodes, but each is under a quarter of an hour long, half the "standard" episode length.
** The same goes for the ''Anime/GalaxyAngel'' anime.
** And ''Anime/SteelAngelKurumi''
** Same goes for ''Manga/CromartieHighSchool'', though they generally broadcast them in pairs.
** As well as ''Anime/RiskySafety'', but it has 24 episodes.
** ''VisualNovel/WWish'' and ''VisualNovel/FinalApproach'' each have 13 twelve-minute episodes, aired side-by-side during the "Princess Hour."
* ''Anime/AyakashiSamuraiHorrorTales'' 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 [[TelevisionSerial 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.)
** ''Anime/BlueLiterature'' follows the same format, with five arcs adapted from Japanese literature.
* ''Anime/BlackRockShooter'' is eight episodes long, and was aired in NoitaminA. 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 ''Series/{{Chuck}}''. During the 2007-2008 season, however, a lot of this was the unintentional result of that season's Writer's Strike.
* ''LightNovel/FateZero'''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 [[InfoDump humongous amount of prologue exposition]] (for a show which is ''itself'' a prologue for [[VisualNovel/FateStayNight an entire franchise]]) out of the way in the first episode. The second season is a normal 13 episode season.
* ''Anime/{{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.)
* ''Manga/KOn'''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.
* ''LightNovel/KokoroConnect'' has 13 episodes, but with 4 [=OVAs=] on the way in 2013, it's an amount of 17 episodes altogether.
* ''Anime/PrincessTutu'' 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 ''LightNovel/{{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, TheDragon would be fought by Episode 13, and from episode 14 onwards, the focus would shift to TheManBehindTheMan or some other BigBad therein.
** It has, however, been packaged together in Japan and elsewhere, and is often referred to as [[FanNickname Revolution-R]] for simplicity's sake.
* ''Anime/SpaceDandy'' consists of two 13 episode seasons, although this had been planned out before it began airing, so it can also be considered a 26 episode series with a break in the middle. Nonetheless, it's still officially two seasons.
* ''WesternAnimation/TheLegendOfKorra'' was going to be the WesternAnimation 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.


%comment% Please don't just place new examples here at the bottom -- find the appropriate section and add your examples there, alphabetically for easy indexing. Thanks. :)

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