A-1 Pictures
A Japanese animation studio and production company owned by Aniplex, producing television anime, films, web animation, and other animated content for domestic and international audiences.
Last updated August 25, 2026
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Overview
A-1 Pictures is a Japanese animation studio and production company established by Aniplex on May 9, 2005. It was created within Sony Music Entertainment Japan’s anime business to produce and oversee animated works associated with Aniplex, but it subsequently developed into a full-scale studio serving a broad range of commercial animation projects. The company is headquartered in Tokyo and is best known for producing or participating in television series, theatrical films, original video animation, specials, and other visual-media projects. The studio operates within Japan’s project-based anime production system. Individual titles are commonly developed through cooperation among publishers, broadcasters, distributors, music companies, game businesses, licensors, and other production-committee participants. Accordingly, A-1 Pictures’ role can differ from one title to another: it may serve as the principal animation studio, a production partner, or an organization responsible for substantial portions of planning, animation, and production management. The studio does not generally sell a single standardized consumer product; its principal output is intellectual-property-based audiovisual content. A-1 Pictures produced its first television series, Big Windup!, in 2007, after earlier work that included co-producing the original series Zenmai Zamurai. Its portfolio has covered family entertainment, idol and music projects, fantasy action, science fiction, romance, comedy, drama, and adaptations of manga, light novels, and games. Notable projects associated with the studio include The Idolmaster, Sword Art Online, Your Lie in April, Kaguya-sama: Love Is War, and 86—Eighty-Six. These works helped establish the company as a recognizable name among anime viewers in Japan and overseas. The company has also maintained an international profile through overseas licensing, international distribution, and participation in events such as Anime Expo 2007 in Long Beach, California. Its international reach is supported by the wider Aniplex and Sony network, although the ownership, financing, distribution, and merchandising rights for specific titles may be shared with other companies. A-1 Pictures has changed its internal studio structure as its activities expanded. In 2018, its Kōenji Studio was rebranded as CloverWorks and given a distinct identity. CloverWorks subsequently separated from A-1 Pictures while remaining an Aniplex subsidiary. In 2024, animation studio 3Hz announced the transfer of its animation planning and production business to A-1 Pictures, further broadening A-1 Pictures’ production organization. The studio remains an active Aniplex subsidiary focused on developing and producing Japanese animation for television, cinema, streaming, home video, and international markets.
History
A-1 Pictures was founded on May 9, 2005, by Aniplex, the anime production and distribution company of Sony Music Entertainment Japan. Mikihiro Iwata, a former producer associated with Sunrise, founded the studio. Its initial purpose was to provide a dedicated organization for animating and supervising selected Aniplex productions, particularly projects intended for family audiences. The company soon expanded beyond that original remit and became a general commercial animation studio. In 2006, A-1 Pictures co-produced Zenmai Zamurai, an original animated production, and established a studio in Asagaya in October. The following year it produced Big Windup!, its first television anime series. These early activities gave the company experience in serialized television production and helped establish its own production capacity. A-1 Pictures also began building an international profile during this period, including participation in Anime Expo 2007 in Long Beach, California, where it held a studio panel. The studio’s work broadened during the late 2000s and 2010s. In 2010, A-1 Pictures collaborated with TV Tokyo’s anime department and Aniplex on Anime no Chikara, a project focused on original anime. The initiative produced Sound of the Sky, Night Raid 1931, and Occult Academy. Alongside original works, the company continued adapting manga, light novels, games, and other established properties. Its productions covered idol entertainment, action fantasy, school drama, romance, music, comedy, and science fiction. A-1 Pictures became particularly visible internationally through projects such as The Idolmaster and Sword Art Online. The latter’s television anime, which began in 2012, helped make the studio widely recognizable among global anime viewers. Your Lie in April, broadcast in 2014, demonstrated the company’s work in music-centered youth drama. Later productions such as Kaguya-sama: Love Is War and 86—Eighty-Six extended its profile in romantic comedy and military science fiction. The studio has also participated in animated films, specials, original video releases, and other formats. The company’s development has taken place within the production-committee model common in Japanese animation. A title may involve a publisher, broadcaster, record company, distributor, game company, streaming service, and other rights holders. A-1 Pictures therefore does not necessarily own or control every property it animates, and its precise responsibilities vary by project. Aniplex’s role as parent company gives the studio access to a major anime distribution and content network, while international exploitation is frequently handled through broader corporate and licensing arrangements. In April 2018, A-1 Pictures rebranded its Kōenji Studio as CloverWorks. The move created a separate identity for that production base while the Asagaya Studio retained the A-1 Pictures name. On October 1, 2018, CloverWorks formally separated from A-1 Pictures, although it remained under Aniplex. This restructuring reflected the expansion of Aniplex’s animation operations and allowed the two studios to operate as distinct brands. On June 17, 2024, animation studio 3Hz announced that its animation planning and production business would be transferred to A-1 Pictures. The transaction expanded A-1 Pictures’ organizational responsibilities and reinforced its position within Aniplex’s studio portfolio. A-1 Pictures remains active in television, film, streaming, and related animation production, with projects reaching Japanese and overseas audiences through broadcast, theatrical, home-video, digital, and licensing channels.
- 2024
3Hz business transfer
[1]3Hz announces the transfer of its animation planning and production business to A-1 Pictures.
- 2018
Kōenji Studio becomes CloverWorks
[1]A-1 Pictures rebrands its Kōenji Studio as CloverWorks and gives it a distinct brand identity.
- 2018
CloverWorks separates from A-1 Pictures
[1]CloverWorks becomes separate from A-1 Pictures while remaining an Aniplex subsidiary.
- 2014
Your Lie in April broadcasts
[4]A-1 Pictures produces the television anime Your Lie in April, a music and coming-of-age drama.
- 2012
Sword Art Online television anime begins
[3]The studio participates in the television adaptation of Sword Art Online, one of its most internationally recognized projects.
- 2010
Anime no Chikara projects
[1]A-1 Pictures collaborates with TV Tokyo and Aniplex on three original series: Sound of the Sky, Night Raid 1931, and Occult Academy.
- 2007
First television series
[1]The studio produces Big Windup!, its first television anime series.
- 2007
Anime Expo appearance
[1]A-1 Pictures participates in Anime Expo 2007 in Long Beach, California, and presents its own studio panel.
- 2006
Zenmai Zamurai co-production
[1]A-1 Pictures co-produces the original animated production Zenmai Zamurai and establishes its Asagaya studio later that year.
- 2005
A-1 Pictures is founded
[1]Aniplex establishes A-1 Pictures on May 9 as an animation production subsidiary.
Products and positioning
A major Japanese commercial animation studio using Aniplex’s production, distribution, and international content network to develop and produce diverse anime projects.
Television and theatrical anime · 2012
Sword Art Online
A fantasy-action franchise set across virtual-reality game worlds and related environments. A-1 Pictures produced the early television anime and participated in associated animated projects. The franchise became a major international anime property and significantly increased global awareness of the studio, although its underlying intellectual-property rights and commercial exploitation involve multiple companies.
Television anime · 2011
The Idolmaster
An idol and music multimedia property originating in games and expanded through animation, music, live events, and related media. A-1 Pictures produced the principal television anime adaptation, translating a large cast of game characters and their performance careers into serialized television storytelling.
Television anime · 2014
Your Lie in April
A character-driven coming-of-age drama about piano performance, grief, friendship, and adolescence. Produced by A-1 Pictures, the series is noted for integrating classical music and emotional storytelling into a school setting. It is a completed television production and remains one of the studio’s best-known dramatic works.
Television anime · 2019
Kaguya-sama: Love Is War
A romantic comedy centered on two high-achieving student-council members who regard confessing their feelings as a strategic defeat. A-1 Pictures produced the television anime adaptations and related animated content, using fast-paced comic direction, internal monologue, and ensemble character interactions as central stylistic devices.
Television anime · 2021
86—Eighty-Six—
A science-fiction war drama about an unequal society, segregated combat forces, and remotely operated weapons. A-1 Pictures produced the television adaptation, combining military action with political themes and character-focused drama. The project illustrates the studio’s involvement in light-novel adaptations and more serious speculative fiction.
Television anime · 2007
Big Windup!
A baseball-focused television anime adapted from a manga. Big Windup! was A-1 Pictures’ first television series and served as an early demonstration of the studio’s ability to manage serialized production after its establishment as an Aniplex animation subsidiary.
Brand decisions
2024
Transfer of 3Hz animation businessM&ABackground
Studio 3Hz announced a change to the organization responsible for its animation planning and production activities.
Action taken
3Hz transferred its animation planning and production business to A-1 Pictures.
Aftermath
The transfer expanded A-1 Pictures’ production organization and brought the 3Hz business under the Aniplex studio structure.
2018
Rebranding of the Kōenji Studio as CloverWorksStrategyBackground
A-1 Pictures operated more than one production base as its animation activities expanded. Aniplex and A-1 Pictures sought to distinguish the Kōenji operation from the main Asagaya studio.
Action taken
The Kōenji Studio was rebranded as CloverWorks in April 2018, creating a separate studio identity.
Aftermath
CloverWorks separated from A-1 Pictures on October 1, 2018, but continued as an Aniplex subsidiary.
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