<Tr> <Td> </Td> <Td> This episode list's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> <P> Infinite Stratos is an anime series adapted from the light novels of the same title written by author Izuru Yumizuru and illustrator Okiura published by Media Factory . The anime is produced by 8 - Bit, directed by Yasuhito Kikuchi, series composition by Fumihiko Shimo, character design by Tomoyasu Kurashima, art directed by Shunichiro Yoshihara and sound directed by Masafumi Mima and Toshihiko Nakajima . Set in the near future, a powered exoskeleton called "Infinite Stratos" (IS), which possesses advanced technology and combat capabilities, changes the world including a major effect on society, as only women can pilot IS . The story focuses on Ichika Orimura, the younger brother of famed Japanese IS pilot Chifuyu Orimura who is discovered to be the first male to be able to pilot an IS . He is then sent to the prestigious Infinite Stratos Academy--an international academy where IS pilots from all over the world are trained--where he meets Houki Shinonono, his childhood friend and younger sister of the creator of the IS . Along with other IS students from different nations, Ichika and Houki's busy school life begins . The anime follows the first three volumes of the light novels, with minor changes in the plotline . </P> <P> The first anime aired in Japan from January 7 to April 1, 2011 on TBS, with subsequent runs on Chubu - Nippon Broadcasting, Sun Television, Kyoto Broadcasting System and BS - i . The series is licensed in North America by Sentai Filmworks, with Anime Network simulcasting the series on their video website . Six DVD and Blu - ray volumes will be released by Media Factory between March 30 and September 21, 2011 . An original video animation, entitled Infinite Stratos> Encore: A Sextet Yearning for Love (IS <インフィニット ・ ストラトス> アンコール 『 恋 に 焦がれる 六 重奏 』, IS <Infinitto Sutoratosu> Ankōru: Koi ni Kogareru Rokujūsō), was released in Japan on DVD and Blu - ray on December 7, 2011 . </P> <P> The opening theme for the first anime is "Straight Jet", performed by Minami Kuribayashi . The ending theme song is "Super ∞ Stream", with the first episode version sung by Yōko Hikasa, the second and third episode version sung by Hikasa and Yukana, the fourth and fifth episode version sung by Hikasa, Yukana and Asami Shimoda, the sixth and seventh episode version sung by Hikasa, Yukana, Shimoda and Kana Hanazawa and the final version for the rest of episodes sung by Hikasa, Yukana, Shimoda, Hanazawa and Marina Inoue . Each version of the song reflects the voice actresses' character who is running with Ichika in the episode's ending credits . </P>

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