The first season aired on Chiba TV on October 4, 2008, and later on AT-X on January 8, 2009, upon the release of episode 14, until March 19, and consisted of twenty-four episodes. It adapts the first six volumes of the light novel. The second season aired from October 8, 2010, to April 1, 2011, and consisted of twenty-four episodes. It adapts the seventh to the thirteenth volume of the light novel. The third season aired from October 5, 2018, to April 5, 2019, and consisted of twenty-six episodes. It adapts the final nine volumes of the light novel. All three seasons are available on Blu-ray and DVD, as well as on streaming services.
A Certain Magical Index-tan (とある魔術の禁書目録たん) is an original video animation series included in the Japanese release of the first and fifth Blu-ray and DVDs of each season of A Certain Magical Index, which features a chibified Index and parodies of events that take place in the series.
Tōma Kamijō meets Index-tan, a chibified version of Index, hanging on his balcony, but she gets captured by a bird; Aisa Himegami pick-ups a palmtop tiger kitten, referencing Taiga Aisaka; Index-tan promotes Shakugan no Shana-tan; Komoe Tsukuyomi summons a "cute" angel during a ritual; Kaori Kanzaki angrily avoids questions about herself and her voice actress; Tōma gets puked by Index-tan as he tries to negate the spell in her mouth; While fighting Index in her John's Pen mode, Tōma tells Stiyl Magnus and Kaori to stop being as side characters; Motoharu Tsuchimikado and Pierce Aogami market a cleaning robot on air; and Aisa asks Komoe for some meat as the latter keeps on eating them. Before every new sketch is an intermission by Mikoto Misaka encouraging the viewers to conserve power. A post-credits scene shows Tōma and Index-tan going to a public bath when she asks about nasi goreng dish.
Index-tan dodges a bird while hanging on the balcony of Tōma's apartment but is caught by a cat instead; During their fight, Accelerator blushes when Tōma slaps his hand away from him; Tōma freaks out when he sees Komoe's car running without her on the driving seat; A childish Sherry Cromwell draws on the ground with chalk; Tōma questions Index-tan and Hyōka Kazakiri's mumbling singing; Kaori states Sasha Kreutzev's power when a marlin jumps out of the water; Index-tan talks with Tōma about his voice actor's blog; and the Sisters blow up Academy City's wind turbines as Accelerator proudly states his voice actor's win for a rookie award at Seiyu Awards while manipulating plasma in the air. Before every new sketch is an intermission by Aisa talking about her limited role and other thoughts. A post-credits scene shows Mikoto and the Sisters promoting the anime adaptation of A Certain Scientific Railgunmanga series, and Aisa getting an opportunity to talk about herself.
Index-tan behaves like a certain squid girl when she gets caught by a cat while hanging on the balcony of Tōma's apartment; Tōma follows Sphinx as they look for a kidnapped Index-tan, only to find the cat from Tantei Opera Milky Holmes; A kidnapped Index-tan laments about the youth finding the celebration of Bon Festival unpopular, while her kidnapper Ōma Yamisaka plays the lyre; Ruiko Saten is seen doing her routines at night while the Remnant incident takes place; During their fight, Agnese Sanctis is dismayed with Stiyl littering his cigarette; Agnese, appearing in her chibi form, complains about being chibified; Kuroko Shirai notices the flowers on Kazari Uiharu's head are getting cuter; and Kaori beats the Knights of England, with Tōma getting caught in her rampage. She apologizes for being "drunk" and will offer him her body as an atonement; Misaka 10032 is seen in a dark room playing a computer game; and Aisa and Komoe are acknowledged for being absent during this episode with a laugh track.
4
June 22, 2011 (2011-06-22)
Tōma finds Index-tan hanging on his apartment's balcony, only to punch her away; Accelerator brags his new award related to voice acting with Amata Kihara, with Kuroko appearing to mention her voice actress' award as well; After Tōma accidentally unhooked Aisa's bra, Seiri Fukiyose brags about wearing a front-hooked bra, causing a celebration among their class; Aisa is unable to eat meat due to Index-tan snatching them; Misaka 10032 and other Sisters provides commentary while playing a little sister game; Awaki Musujime teleports otakus as shields against Mikoto; Misaka 10032 introduces Virtual Boy to Last Order; Kuroko and Kazari discuss how to make A Certain Magical Index anime series popular around the world; and Tōma comments how the writers are running out ideas for Index-tan. Before every new sketch is an eyecatch featuring Itsuwa saying, "Go ahead".
Tōma and Index-tan talk about how long this episode has been released since the last one; Index-tan is carried away by the wind as Tōma and Itsuwa ride a tricycle; With Index-tan missing, Itsuwa ominously takes this chance to be with Tōma alone; Tōma and Index discuss how voice actors age and might be replaced in a long run; A dieting Terra of the Left says out loud the ingredients of bread and cookies before casting his spell towards Tōma and Itsuwa; A segment called "Accel-san" features Accelerator using his knowledge to solve problems presented by Teitoku Kakine; Another segment called "Left-san" features Terra using knowledge to solve problems, particularly about who ate Tōma's manju; and Tōma and Index-tan talk about how there is a little change to the protagonist of a new sequel 10 years after its first release. Before every new sketch is a "Who's that Pokémon?"-type eyecatch.
Tōma and Index-tan talk about how this episode will be the last one for Index-tan series; Shizuri Mugino only utters Shiage Hamazura's last name; After saving a kidnapped girl, Accelerator iterates that he is a villain as she keeps telling him that he is a good guy; Index guesses pictures with sharp teeth by answering "Terra"; Lessar questions how her name is related to "lesser"; In the "Accel-san" segment, Accelerator and Last Order talk about mochi; Lola Stuart is disappointed for a limited screen time in this series; Index-tan discusses different types of fish; The Knight Leader uses his Spell of Thororm to change everything to zero; and Tōma and Index-tan discuss the end of Index-tan series.
^ ab"Story — 2nd Season". toaru-project.com/index_1_2 (in Japanese). Archived from the original on December 7, 2021. Retrieved December 8, 2021.
^"緊急：3/18（金）23:30～他『とある魔術の禁書目録II』1週放送休止のお報せ" [URGENT: Announcement of a one-week suspension of the broadcast of A Certain Magical Index II from 23:30 on Friday, March 18.]. AT-X (in Japanese). March 14, 2011. Retrieved June 3, 2021.
^とある魔術の禁書目録III Vol.1＜初回仕様版＞ [A Certain Magical Index III Vol. 1 <First Edition>]. toaru-project.com/index_3 (in Japanese). Archived from the original on July 19, 2021. Retrieved January 29, 2022.
^とある魔術の禁書目録III Vol.5＜初回仕様版＞ [A Certain Magical Index III Vol. 5 <First Edition>]. toaru-project.com/index_3 (in Japanese). Archived from the original on December 8, 2021. Retrieved January 29, 2022.
