Hybrid × Heart Magias Academy Ataraxia (魔装学園H(ハイブリッド)×H(ハート), Masō Gakuen Haiburiddo Hāto) is a Japanese light novel series written by Masamune Kuji and illustrated by Hisasi. Riku Ayakawa is drawing a manga adaptation in Kadokawa's Comp Ace magazine. An anime television series aired from 5 July 2016 to 20 September 2016 and is licensed by Crunchyroll outside of Japan in the English-speaking regions.
 The plot of the story occurs in the future when Earth is attacked by invaders from another universe through portals, and using weaponry that combines magic and science. Mankind's weapons are practically useless against the invaders. Mankind is forced to retreat from land and develops giant floating structures referred to as Mega Floats. A weapon referred to as Heart Hybrid Gear or HHG is developed, which is the only effective weapon against the invaders. A core is implanted within a person and by calling out the HHG's name, one can summon an armor around them which can effectively combat the Alternate Universe (AU) forces. 
Hida Kizuna possesses a HHG, but it is not strong enough to make him particularly important. His older sister calls him to transfer to a strategic defense school, where many of the students use their HHG abilities to fight invaders from another world while wearing extremely skimpy pilot outfits. Kizuna's fighting ability doesn't measure up, but his sister has another plan — performing erotic activities with Kizuna will allow the girls to replenish their energy or power-up. His ability proves to be critical to their success, as he and the other members of the Ataraxia defense academy find themselves engaged in a hidden agenda about the destruction of two worlds as well as to bring back his beloved from sorrow.
 Strategic Defense Academy Ataraxia is an academy for people who use Heart Hybrid Gear. It is also a Megafloat system cut off from mainland Japan. It was established in response to the arrival and mass onslaught of the Batlantis invasion force.
 Masters are America's Heart Hybrid Gear team.
 Batlantis is another world, that exists in another reality. They traverse to and fro between both Earth's dimension and their own, through a tear in the fabric of reality. Unlike Earth, there they have developed with both magic and science, which makes their technology many times more advanced and is the primary reason for the defeat humanity suffered.
 The light novels are written by Masamune Kuji and illustrated by Hisasi, with mecha designs by Kurogin. The series is published by Kadokawa's Kadokawa Sneaker Bunko imprint. The first volume was released in February 2014. The series ended with the thirteenth volume on 1 July 2018. A drama CD based on the series was released in March 2015, written by Kuji.
 A manga adaptation with art by Riku Ayakawa began serialization in Kadokawa's Comp Ace on 26 June 2015. Yen Press has licensed the manga in North America.
 In September 2015, an anime adaptation of Hybrid × Heart Magias Academy Ataraxia was announced. In January 2016, Kuji announced via Twitter that the adaptation would be a TV series, which is scheduled to premiere in July 2016. The main cast and staff were officially announced in April 2016. The series is directed by Hiroyuki Furukawa, written by Yasunori Yamada, and produced by Production IMS, with character designs by Kana Miyai. Masakatsu Ohmuro of Dax Production served as the sound director. The music of the series is produced by Victor Entertainment's Flying Dog label. Two pieces of theme music is used: an opening theme and an ending theme. The opening theme is "miele paradiso" (lit. "Honey Paradise"), and the ending song is "Chi"; both are performed by Iori Nomizu.
 The series premiered on 5 July 2016, and was broadcast on AT-X, Tokyo MX, TV Saitama, Chiba TV, tvk, KBS Kyoto, Sun TV, and BS11 then ended on 20 September 2016. Crunchyroll simulcast the series on their website. An original video animation series, titled Love Room, was bundled in the first and second volume of the home video release, containing an episode each. The first and second home video release volumes were released on 30 September 2016 and 28 October 2016, respectively. In North America, Funimation, which is now known as Crunchyroll, licensed the series for a home media release on 21 November 2017. However, in October 2017, the home media release was delayed.