Tenchi Muyo! War on Geminar

Isekai no Seikishi Monogatari (異世界の聖機師物語, lit. Sage Machine Master Story in the Different World), which was released in North America as Tenchi Muyo! War on Geminar is a Japanese OVA series. It is a spin-off of the Tenchi Muyo! series, which was created by Masaki Kajishima. Produced by AIC Spirits and BeSTACK, the series aired thirteen episodes on pay-per-view network Animax between March 20, 2009 and March 19, 2010.
It chronicles the story of a young boy named Kenshi Masaki, the younger half-brother of Tenchi Muyo!'s protagonist Tenchi, who is transported to the world of Geminar. The story shares some character names and general terms from the anime Photon, another series created by Masaki Kajishima.
A light novel adaptation by Atsushi Wada was published by Fujimi Shobo on August 20, 2009 under their Fujimi Fantasia Bunko imprint. A manga adaptation was serialized in Comic REX and published by Ichijinsha on June 9, 2010, spanning two volumes. At Otakon 2012, Funimation Entertainment announced they had licensed the series for release in North America.
The anime is part of the Tenchi Muyo! Ryo-Ohki continuity, taking place 15 years after the events of Tenchi Muyo! GXP.
Kenshi Masaki is a 15-year-old boy that has unwillingly traveled from his home on Earth to the alternate world of Geminar (ジェミナー, Jeminā). On Geminar, the countries wage wars using Sacred Mechanoids, humanoid exoskeletal weapons that were originally discovered within ancient ruins and developed over centuries. After being tricked by a mysterious organization into participating in an attempt to assassinate Lashara Earth XXVIII, the young ruler of the Shtrayu Empire, he ends up captured after he chooses not to kill her. Deducing enough about Kenshi to interest her and because his abilities make him an extremely valuable property, Lashara decides to take Kenshi under her protection.
Disguised as her attendant, Kenshi travels with her and her bodyguard Chiaia Flann to the Holy Land, a virtually impregnable fortress that serves as an academy to train Sacred Mechanoid pilots (Mechamasters), most of whom are female. With his kindness, tenacity, and skills that vary from carpentry and cooking to advanced survival techniques, Kenshi eventually becomes a celebrity in the academy as well as the object of affection of many female students, making some of the male students envious. However, the same organization that deceived Kenshi is secretly working inside and against the academy, and a worldwide conflict is about to begin.
Isekai no Seikishi Monogatari was produced by AIC and BeSTACK under the directorship of Koji Yoshikawa, with the script written by Hideki Shirane, characters by Hajime Watanabe, music by Akifumi Tada, and produced by Shoji Ohta, Yasuo Ueda, and Yoshiyuki Matsuzaki, respectively. Thirteen episodes aired in Japan between March 20, 2009 and March 19, 2010 on Japan's Pay-Per-View television channel Animax. The episodes were later released on DVD and Blu-ray by VAP between May 22, 2009 and May 26, 2010. A Blu-ray box set was later released on May 18, 2011. At Otakon 2012, North American distributor Funimation Entertainment announced they have licensed the series under the title of Tenchi Muyo! War on Geminar.
The opening theme for the series is "Follow Me" by Japanese-Canadian pop singer Seira Kagami featuring Sound Around, while the ending theme is "Destino" (Italian for "Destiny") by Alchemy+. A maxi single for the opening theme was released by VAP on January 14, 2010.
A light novel adaptation of the series written by Atsushi Wada and illustrated by Katsumi Enami was released on August 20, 2009 by Fujimi Shobo under their Fujimi Fantasia Bunko imprint.
A manga adaptation illustrated by Bau was serialized on the June 2009 issue of Comic REX. Two volumes were released on June 9, 2010 by Ichijinsha. The manga follows a slightly different storyline from the anime, though its plot remains the same.