The Asterisk War: The Academy City on the Water (Japanese: 学戦都市アスタリスク, Hepburn: Gakusen Toshi Asutarisuku, lit. “Academy Battle City Asterisk”) is a Japanese light novel series written by Yū Miyazaki, and illustrated by Okiura. An anime television series adaptation by A-1 Pictures airing on October 3, 2015. In the 21st century, Earth is in a rapidly declining economic state. Invertia impact event destroyed most of the planet’s cities and resulted in humans gaining superpowers to become the Genestella. The city of Asterisk has six academies where the Genestella participate in tournaments called Festas.