Gakusen Toshi Asterisk (学戦都市アスタリスク, lit. "The Asterisk War") is an ongoing 2012 light novel series written by Yuu Miyazaki, with illustrations by Okiura. It began publication in the September of 2012 by Media Factory under the MF Bunko J imprint. The series has been adapted into a manga series that began its release in January 2013. It is written by the light novel author and features illustrations by Ningen. The publication is also handled by Media Factory. Yen Press handles the US releases for both the light novel and manga. A-1 Pictures announced that, in the Fall of 2015, an anime series would be released. The anime began its run on October 3, 2015, and lasted 12 episodes. The second season, also handled by A-1 Pictures, began its release on April 2, 2016 and ran for 12 episodes like its predecessor. A game called he Asterisk War: Houka Kenran for the PlayStation Vita was created and released by Bandai Namco Games in January 2016, based off of the series.
Long, long ago, an epic catastrophe, known as Invertia, caused a complete change in the world's power balance. In the years following this disaster, a group known as the Integrated Enterprise Foundation rose to power. In addition to this massive change, a new breed of humans born with amazing physical skills known as Genestella also emerged and joined the ranks of humanity.
Gakusen Toshi Asterisk follows the story of Ayato Amagiri, a student who has just transferred into one of the six most elite schools for Genestella students in the world—Seidoukan Academy—where students learn to control their powers and duel against each other in entertainment battles known as festas. Unfortunately, Ayato gets off to a rough start. When trying to return a lost handkerchief to a female classmate, he accidentally sees her changing which leads to her challenging him to a duel. What most people don't realize however, is that Ayato has no real interest in festas and instead has an alternative motive for joining this prestigious school. What is Ayato's big secret? Will he be able to keep up his act when surrounded by some of the greatest Genestella in the world? (via MyAnimeList.net)