Question: What is a former production company that the animator of the Level C video animation worked for?

full_context: Document 1: J.C.Staff: J.C.Staff Co., Ltd. (株式会社ジェー・シー・スタッフ , Kabushiki gaisha Jē Shī Sutaffu , J and C stand for "Japan Creative") , is a Japanese anime studio founded in January 1986 by Tomoyuki Miyata, who previously worked at Tatsunoko Production. The studio's first release was "Yōtōden" in 1987. They have produced several well-known anime series, such as "Slayers", "Revolutionary Girl Utena", "Excel Saga", "Shingetsutan Tsukihime", "Shakugan no Shana", "A Certain Magical Index", "A Certain Scientific Railgun", "Honey and Clover", "Alien Nine", "Azumanga Daioh", "Toradora!", "Zero No Tsukaima", "Ikki Tousen", "Sakurasou no Pet na Kanojo", and "Betrayal Knows My Name". Since 2005, the majority of their works have been directed by Takashi Watanabe, Ken'ichi Kasai and Yoshiaki Iwasaki.
Document 2: Toei Animation: Toei Animation Co., Ltd. (東映アニメーション株式会社 , Tōei Animēshon Kabushiki-gaisha ) (pronounced "toe ay") is a Japanese animation studio primarily owned by Toei Company.
Document 3: List of Angel Beats! episodes: The 13-episode Japanese anime television series "Angel Beats!" is based on an original concept by Jun Maeda with original character design by Na-Ga; both Maeda and Na-Ga are from the visual novel brand Key known for producing such titles as "Kanon", "Air", and "Clannad". It is directed by Seiji Kishi and produced by the animation studio P.A.Works and production company Aniplex. Chief animator Katsuzō Hirata is also the character designer and the screenplay was written by Maeda. The music, composed by Maeda and the group Anant-Garde Eyes, is produced by Aniplex with Satoki Iida as the sound director. The plot takes place in the afterlife and follows the main protagonist Otonashi, a boy who lost his memories of his life after dying. He is enrolled into the afterlife school and meets a girl named Yuri who invites him to join the Afterlife Battlefront (死んだ世界戦線 , Shinda Sekai Sensen (SSS) ) —an organization she leads which fights against God. The SSS fight against the student council president Angel, a girl with supernatural powers.
Document 4: A Certain Magical Index: A Certain Magical Index (とある魔術の<ruby ><rb>禁書目録</rb><rp> (</rp><rt >インデックス</rt><rp>)</rp></ruby> , Toaru Majutsu no Indekkusu ) is a Japanese light novel series written by Kazuma Kamachi and illustrated by Kiyotaka Haimura, which has been published by ASCII Media Works under their Dengeki Bunko imprint since April 2004. The plot is set in a world where supernatural abilities exist. The light novels focus on Tōma Kamijō, a young high school student in Academy City who has an unusual ability, as he encounters an English nun named Index. His ability and relationship with Index proves dangerous to other magicians and espers who want to discover the secrets behind him, Index as well as the city. Yen Press have licensed the novels in North America. A manga adaptation by Chuya Kogino began serialization in "Monthly Shōnen Gangan" from May 2007. J.C.Staff produced two 24-episode anime series between 2008 and 2011. An animated film was released in February 2013. The anime adaptations are licensed in North America by Funimation.
Document 5: List of Umineko When They Cry chapters: The manga series "" is written by Ryukishi07 and illustrated by six different manga artists working separately on different story arcs based on the "Umineko: When They Cry" visual novel series by 07th Expansion. The first manga, an adaptation of "Legend of the Golden Witch" illustrated by Kei Natsumi, began serialization in Square Enix's manga magazine "Gangan Powered" in the January 2008 issue. After "Gangan Powered" was discontinued, the manga was transferred to Square Enix's "Monthly Gangan Joker" magazine with the debut May 2009 issue and continued until the publication of the September 2009 issue. Jirō Suzuki drew the adaptation of "Turn of the Golden Witch" which was serialized between the August 2008 and October 2010 issues of Square Enix's "GFantasy". The manga adaptation of "Banquet of the Golden Witch" is illustrated by Kei Natsumi and was serialized between the October 2009 and July 2011 issues of "Gangan Joker". Sōichirō drew the adaptation of "Alliance of the Golden Witch", which was serialized in Square Enix's Internet-based magazine "Gangan Online" between October 1, 2009 and February 2, 2012.
Document 6: P.A.Works: P.A.Works Corporation (株式会社ピーエーワークス , Kabushiki-gaisha Pī Ē Wākusu , short for Progressive Animation Works) is a Japanese animation studio established on November 10, 2000 and is located in Nanto, Toyama, Japan. The company's president and founder Kenji Horikawa once worked for Tatsunoko Production, Production I.G, and Bee Train before forming P.A.Works in 2000. The main office is located in Toyama, Japan, which is where the drawing and digital photography take place, and production and direction takes place in their Tokyo office. The company is also involved with animation in video games, as well as collaborating in the past with Production I.G and Bee Train to create anime. In January 2008, P.A.Works produced "True Tears", their first anime series as the main animation studio involved in the production process.
Document 7: Level C: Level C is a Japanese manga series written and illustrated by Futaba Aoi and Mitsuba Kurenai. The manga is licensed in North America by Media Blasters. It has also been made into an original video animation by J.C.Staff. It is the tale of a relationship between a salaryman and a high school-aged male model.
Document 8: Color (manga): Color is a Japanese manga anthology written and illustrated by Taishi Zaou and Eiki Eiki. "Color" was serialized in "Dear+", a magazine known for its romantic and non-explicit boys love manga published by Shinshokan, and a tankōbon collecting the chapters released in February 1999. "Color" is licensed in North America by Digital Manga Publishing which released the manga in June 2009. It is licensed in France by Asuka and in Germany by Egmont Manga.
Document 9: Studio Ghibli: Studio Ghibli, Inc. (Japanese: 株式会社スタジオジブリ , Hepburn: Kabushiki-gaisha Sutajio Jiburi ) is a Japanese animation film studio based in Koganei, Tokyo, Japan. The studio is best known for its anime feature films, and has also produced several short films, television commercials, and one television film. It was founded on 15 June 1985, after the success of "Nausicaä of the Valley of the Wind" (1984), with funding by Tokuma Shoten.
Document 10: Seven Arcs: Seven Arcs Co., Ltd. (株式会社セブン・アークス , Kabushiki kaisha Sebun Aakusu ) is a Japanese animation production company, and former studio, established on May 31, 2002 and is located in Nakano, Tokyo, Japan by former Studio Pierrot staff. The company originally produced adult original video animation series under another animation studio named Arcturus since April 2000 and had the intention of eventually producing anime television series, which became possible in May 2002 when Seven Arcs was formed. At first, they continued to produce adult OVAs, such as "Night Shift Nurses", but in 2004, moved on to create their first televised anime series, "Magical Girl Lyrical Nanoha". Since then, the company has produced a number of other animated television series and movies.
Document 11: Aurora Publishing (United States): Aurora Publishing, Inc. was the American subsidiary of Japanese publisher Ohzora Publishing, the leading "josei" manga publisher in Japan. Headquartered in Torrance, California, it licensed and published Japanese manga for the North American market. Aurora Publishing's first release was "Walkin' Butterfly" under the "shōjo" imprint "Aurora", which features manga targeting female readers in their teens and younger. Aurora Publishing also released manga under two other imprints: the "yaoi" imprint "Deux Press" featured female-oriented manga about homoerotic relations between beautiful men, while the "josei" imprint "Luv Luv" featured erotic romance manga targeting female readers in their late teens and up. Aurora Publishing distributed some of its manga via Netcomics. In 2010, the Aurora office in California closed. The former employees of Aurora Publishing went on to found Manga Factory. Manga Factory lasted until at least June, 2013 before it closed as well.
Document 12: List of Wandering Son episodes: The 12-episode "Wandering Son" Japanese anime television series is based on the manga series of the same name written and illustrated by Takako Shimura. It is directed by Ei Aoki and produced by the animation studio AIC Classic and production company Aniplex. Chief animator Ryūichi Makino is also the character designer and the screenplay was written by Mari Okada. Composed by Satoru Kosaki and Keiichi Okabe, both from Monaca, the music is produced by Aniplex with Jin Aketagawa as the sound director. The story depicts a male child named Shuichi Nitori who wants to be a girl, and Shuichi's friend Yoshino Takatsuki, a female child who wants to be a boy. The anime adapts the manga from volume five onwards, where the main characters enter their first year of junior high school.
Document 13: List of Book Girl episodes: The "Book Girl" Japanese original video animation (OVA) episodes are based on a collection of Japanese light novels of the same name written by Mizuki Nomura, with illustrations by Miho Takeoka. They are directed by Shunsuke Tada and produced by the animation studio Production I.G. Composed by Masumi Itō, the music is produced by Lantis with Toshihiko Nakajima as the sound director. Chief animator Keita Matsumoto is also the character designer, and the screenplay was written by Yuka Yamada and Megumi Sasano. The story centers around Konoha Inoue, a writer in high school who joined the literature club after meeting Tohko Amano, the president and sole member of the club. Tohko can only eat stories by consuming the paper they are printed on and Tohko often asks Konoha to write her short stories as "snacks".
Document 14: List of Skip Beat! chapters: The chapters of the ongoing Japanese shōjo manga series "Skip Beat!" are written and illustrated by Yoshiki Nakamura. It is the story of Kyōko Mogami, a 16-year-old girl who discovers her childhood friend, Shō Fuwa, who is an aspiring pop idol as well as the boy she loves, only keeps her around to act as a maid and earn money. Furious and heartbroken, she vows to get revenge by beating him in show business. In Japan, the manga was first published in Hakusensha's "shōjo" manga anthology "Hana to Yume" in February 2002, while in the United States, it began publishing under Viz Media's "Shojo Beat" label in 2006. As of March 20, 2017, 40 volumes and one fanbook have been released in Japan, and as of September 6, 2016, 37 volumes have been released in the United States. Viz Media began re-issuing the Skip Beat! manga series in a 3-in-1 VIZBIG EDITION in March 2012, and as of January 3, 2017, 12 volumes have been released.
Document 15: Chu-Bra!!: Chū-Bra!! (ちゅーぶら!! , Chū Bura!! ) is a Japanese manga series written and illustrated by Japanese manga author Yumi Nakata. The manga was first serialized in the Japanese seinen manga magazine "Comic High!" on January 22, 2007, and is published by Futabasha. An anime adaptation began airing on January 4, 2010 in Japan. The anime is also being streamed with English subtitles on the Crunchyroll online video service in North America, Australia, New Zealand and the United Kingdom.
ground_truth: Tatsunoko Production