Original video animation

OVAOVAsOAVdirect-to-videooriginal animation DVDOADoriginal animated videooriginal anime DVDoriginal video animeoriginal video animations
Original video animation, abbreviated as OVA and sometimes as OAV (original animated video), are Japanese animated films and series made specially for release in home-video formats without prior showings on television or in theatres, though the first part of an OVA series may be broadcast for promotional purposes.wikipedia
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Anime

animatedJapanese animationJapanese animated
Original video animation, abbreviated as OVA and sometimes as OAV (original animated video), are Japanese animated films and series made specially for release in home-video formats without prior showings on television or in theatres, though the first part of an OVA series may be broadcast for promotional purposes.
Works released in a direct to video format are called "original video animation" (OVA) or "original animation video" (OAV); and are typically not released theatrically or televised prior to home media release.

The King of Braves GaoGaiGar Final

King of Braves GaoGaiGar Final -Grand Glorious Gathering-, TheThe King of Braves GaoGaiGar Final -Grand Glorious Gathering-Brave King GaoGaiGar Final
In some cases, the length of episodes in a specific OVA may vary greatly, for example in GaoGaiGar FINAL, the first 7 episodes last around 30 minutes, while the last episode lasts 50 minutes; the OVA Key the Metal Idol consists of 15 separate episodes, ranging in length from 20 minutes to nearly two hours each; The OVA Hellsing Ultimate had released 10 episodes, ranging from 42 minutes to 56 minutes.
The King of Braves GaoGaiGar Final (勇者王ガオガイガー FINAL) is a Japanese OVA anime series produced by Sunrise and Victor Entertainment.

Key the Metal Idol

Key the Metal Idol: Third Program
In some cases, the length of episodes in a specific OVA may vary greatly, for example in GaoGaiGar FINAL, the first 7 episodes last around 30 minutes, while the last episode lasts 50 minutes; the OVA Key the Metal Idol consists of 15 separate episodes, ranging in length from 20 minutes to nearly two hours each; The OVA Hellsing Ultimate had released 10 episodes, ranging from 42 minutes to 56 minutes.
Key the Metal Idol is an original video animation (OVA) anime series that was released in Japan from 1994 to 1997.

Hellsing

Hellsing UltimateCrossfireHellsing Ultimate OVA I
In some cases, the length of episodes in a specific OVA may vary greatly, for example in GaoGaiGar FINAL, the first 7 episodes last around 30 minutes, while the last episode lasts 50 minutes; the OVA Key the Metal Idol consists of 15 separate episodes, ranging in length from 20 minutes to nearly two hours each; The OVA Hellsing Ultimate had released 10 episodes, ranging from 42 minutes to 56 minutes.
An original video animation (OVA) entitled Hellsing Ultimate was produced by Geneon.

Tenchi Muyo!

Shin Tenchi Muyo!*Love, Tenchi Muyo!
Tenchi Muyo!, for example, began as an OVA but went on to spawn several TV series, three movies, and numerous other spin-offs. Many popular and influential series such as Bubblegum Crisis (1987–1991) and Tenchi Muyo! (1992–2005) were released directly to video as OVAs.
The original series began with a six-episode OVA called Tenchi Muyo!

Wolf's Rain

HigeTsumeVol. 1
Producers make other OVA releases as sequels, side stories, music-video collections, or bonus episodes that continue existing as television series or films, such as Love Hina Again and Wolf's Rain.
Wolf's Rain spans twenty-six television episodes and four original video animation (OVA) episodes, with each episode running approximately twenty-five minutes.

Rurouni Kenshin

Samurai XRurouni Kenshin: Meiji Swordsman Romantic StoryRurouni Kenshin – New Kyoto Arc
The Rurouni Kenshin OVAs, to name one series, exemplified numerous aspects of OVAs; they were slightly based on chapters of the author Nobuhiro Watsuki's manga that had not been adapted into the anime television series, had higher-quality animation, were much more violent, and were executed in a far more dark and realistic style than the TV episodes or the manga.
Besides an animated feature film, two series of original video animations (OVAs) were also produced.

Legend of the Galactic Heroes

Legend of the Galactic Heroes: Die Neue TheseThe Legend of the Galactic Heroes: Die Neue These KaikōGinga Eiyū Densetsu
Probably the longest OVA series ever made, Legend of the Galactic Heroes, spanned 110 main episodes and 52 gaiden episodes.
The main original video animation (OVA) series followed only months later.

Saint Seiya

Knights of the ZodiacSaint Seiya: HadesSaint Seiya: The Hades Chapter
Dark realism featured in Masami Kurumada's famous manga Saint Seiya.
The manga was adapted into an anime television series by Toei Animation that ran from 1986 to 1989, before being continued in the form of three original video animation series between 2002 and 2008.

Kissxsis

Kiss x SisKiss × SisKissxsis OVA
For example, the Kissxsis OVA series generally contains more sexual themes than its television counterpart.
The manga was later adapted into two animated series by Feel; a twelve-episode television show aired from April 5 to June 21, 2010 by AT-X, and an original video animation series from December 22, 2008 to April 6, 2015.

Earthian

Few OVAs specifically target female audiences, but Earthian exemplifies the exceptions.
Earthian is a shōnen-ai manga by Yun Kouga about angel watchers of earth which was made into a J.C.Staff-produced anime OVA.

Bubblegum Crisis

A.D. PoliceBubblegum Crisis: Born to KillK-11
Many popular and influential series such as Bubblegum Crisis (1987–1991) and Tenchi Muyo! (1992–2005) were released directly to video as OVAs.
Bubblegum Crisis is a 1987 to 1991 cyberpunk original video animation (OVA) series produced by Youmex and animated by AIC and Artmic.

Gaiden

side storyside storiesgaiden manga
Probably the longest OVA series ever made, Legend of the Galactic Heroes, spanned 110 main episodes and 52 gaiden episodes.
In anime, examples include Darker Than Black: Gaiden, an OVA released as a prequel to the events of the second season of the show.

Mamoru Oshii

Mamoru OshiOshii Mamoru
Therefore, the first official OVA release to be billed as such was 1983's Dallos, directed by Mamoru Oshii and released by Bandai.
He also holds the distinction of having created the first ever OVA, Dallos.

Dallos

Therefore, the first official OVA release to be billed as such was 1983's Dallos, directed by Mamoru Oshii and released by Bandai.
Dallos is a science fiction OVA series released in 1983.

Megazone 23

Megazone 23 Part IIMegazone 23 - Part IMegazone 23 III
Other famous early OVAs, premièring shortly thereafter, were Fight! Iczer One and the original Megazone 23.
Megazone 23 (メガゾーン23) is a four-part Japanese cyberpunk original video animation created by AIC, written by Hiroyuki Hoshiyama and Emu Arii, and directed by Noboru Ishiguro, Ichiro Itano, Kenichi Yatagai and Shinji Aramaki.

Case Closed

Detective ConanMeitantei Conanof the same name
Typically, such an OVA provides a side-story to a popular TV series (Detective Conan OVAs).
Two original video animations (OVA) series were produced by TMS Entertainment, Nippon Television, and Yomiuri Telecasting Corporation.

Fight! Iczer One

Fight! Iczer 1Fight!! Iczer One
Other famous early OVAs, premièring shortly thereafter, were Fight! Iczer One and the original Megazone 23.
In 1985 the story was adapted into a 3 part Original Video Animation directed by Toshihiro Hirano.

Love Hina

Liddo-kunLove Hina 2Love Hina Advance: Shukufuku no Kane wa Harukana
Producers make other OVA releases as sequels, side stories, music-video collections, or bonus episodes that continue existing as television series or films, such as Love Hina Again and Wolf's Rain. Examples of this include the DVD-only 25th episode of Love Hina, while several episodes of the Oh My Goddess TV series are DVD-only.
It was followed by a bonus DVD episode, Christmas and Spring television specials, and a three episode original video animation (OVA) entitled Love Hina Again.

Lion Books

Rain BoyAdachi-Ga HaraGreen Cat, The
The earliest known attempt to release an OVA involved Osamu Tezuka's The Green Cat (part of the Lion Books series) in 1983, although it cannot count as the first OVA: there is no evidence that the VHS tape became available immediately and the series remained incomplete.
It is regarded as the first attempt to produce an original video animation release on October 10, 1983.

List of Oh My Goddess! episodes

50episode of ''Oh My Goddess!Midsummer Night's Dream" (''Oh my Goddess!'' episode)
Examples of this include the DVD-only 25th episode of Love Hina, while several episodes of the Oh My Goddess TV series are DVD-only.
Oh My Goddess!, the manga by Kōsuke Fujishima, has been adapted into five anime versions between 1993 and 2007, including an original video animation (OVA), The Adventures of Mini-Goddess, Ah! My Goddess, and its sequels, Ah! My Goddess: Flights of Fancy and Ah! My Goddess: Fighting Wings.

Oh My Goddess!

Ah! My GoddessOh My GoddessAh! My Goddess: Flights of Fancy
Examples of this include the DVD-only 25th episode of Love Hina, while several episodes of the Oh My Goddess TV series are DVD-only.
The chapters have been adapted into an original video animation produced by Anime International Company (AIC), and an anime series which aired from 2005 to 2006.

Original net animation

ONAoriginal net animation (ONA)original net animations (ONAs)
Original net animation
The name mirrors original video animation, a term that has been used in the anime industry for straight-to-video animation since the early 1980s.

List of Love Hina episodes

2525th episodeLove Hina
Examples of this include the DVD-only 25th episode of Love Hina, while several episodes of the Oh My Goddess TV series are DVD-only.
After the series finished, Christmas and Spring specials followed, and finally a 3 part original video animation (OVA) series called Love Hina Again.

Home video

home entertainmenthome mediavideo album
Original video animation, abbreviated as OVA and sometimes as OAV (original animated video), are Japanese animated films and series made specially for release in home-video formats without prior showings on television or in theatres, though the first part of an OVA series may be broadcast for promotional purposes.