is a Japanese multimedia project produced as a collaboration between ASCII Media Works' Dengeki Bunko imprint and video game company Sega. The project re-imagines various Sega video game consoles as anthropomorphized girls in modern Japan. The project has inspired a light novel series written by Tà Âru Shiwasu with illustrations by Kei Garà Â, which was serialized in ASCII Media Works' Dengeki Bunko Magazine between 2013 and 2014, and an anime television series adaptation titled by TMS Entertainment, which aired in Japan between October and December 2014. A crossover video game with Idea Factory's Hyperdimension Neptunia franchise, Superdimension Neptune VS Sega Hard Girls, was released for the PlayStation Vita in Japan in November 2015, and in North America and Europe in October 2016.
The project focuses on various anthropomorphised Sega consoles, known as "Sega Hard Girls" or "SeHa Girls" for short, each with their own unique personalities. The anime series follows three such girls; Dreamcast, Sega Saturn, and Mega Drive, who must graduate from Sehagaga Academy, a special school located in Haneda, Tokyo (the real-life location of Sega's corporate offices), by venturing into the worlds of various Sega games and earning medals. The light novels instead depict the girls as goddesses who come to live with the book's protagonist, high school student Isao Sugawara.
A light novel series, titled , was written by Tà Âru Shiwasu, with illustrations by Hatsune Miku artist Kei Garà Â. It began serialization in ASCII Media Works' Dengeki Bunko Magazine on June 10, 2013. ASCII Media Works published the first volume on December 10, 2013 under Dengeki Bunko imprint while the second volume followed on June 10, 2014.
An anthology manga series, , featured stories written and drawn by multiple creators. The series was serialized in Dengeki Maoh magazine in 2014, and was later compiled in a single tankà Âbon volume in February 2015.
The Sega Hard Girls version of Dreamcast makes a cameo appearance in '; the game's updated release, Dengeki Bunko: Fighting Climax Ignition, adds an additional stage based on Hi-sCoool! SeHa Girls. A crossover game with Compile Heart's Hyperdimension Neptunia series, titled , was released for PlayStation Vita in Japan on November 26, 2015 and later on released in North America on October 18, 2016 as well as Europe on October 21, 2016. A high-definition port of the game for Windows was released on June 12, 2017 via Steam. Other games have featured the characters during limited time events, such as Kaden Shoujo and Super Robot Wars X-é.
An anime adaptation titled Hi-sCoool! SeHa Girls, which was produced by TMS Entertainment using the MikuMikuDance animation software and directed by Sà Âta Sugawara, aired in Japan between October 8 and December 24, 2014 on Animax and was simulcast by Crunchyroll. An additional OVA was released as part of the DVD box set on November 3, 2016. The Japanese DVDs included download codes for the show's character models for use in MikuMikuDance. Sugawara also co-wrote the anime's screenplay with Masayuki Kibe. The CG character designs used in the anime were co-designed by Sugawara and Kio, who based the designs on Kei Garà Â's original concepts. Shigeyuki Watanabe handled the CG direction. The opening theme is sung by Dreamcast (Mao Ichimichi), Sega Saturn (Minami Takahashi) and Mega Drive (Shiori Izawa). The ending theme is , based on the Sega company song "Wakai Chikara", sung by SC-3000 (Mai Aizawa), SG-1000 (Yà « Serizawa), SG-1000 II (Naomi à Âzora), Game Gear (Minami Tanaka) and Robo Pitcher (Haruna Momono). The anime was licensed in North America by Discotek Media, and was released via a Blu-ray and DVD combo pack on May 30, 2017; the OVA is not included in the North American release.