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.

[4][5] Other media adaptations include a video game called The Asterisk War: Houka Kenran which was released in Japan on January 28, 2016.

[6] In the 21st century, Earth is in a rapidly declining economic state as megacorporations known as the Integrated Enterprise Foundations (統合企業財体, Tōgō Kigyō Zaitai), rose to power after the Invertia (落星雨, Inverutia)[a] impact event destroyed most of the planet's cities and resulted in humans gaining superpowers to become the Genestella (星脈世代, Jenesutera).

Kirin Toudou is the academy's top fighter, but Claudia, as well as Lieseltanian princess Julis-Alexia von Riessfeld, are close behind.

[11] Yuu Miyazaki has also worked on a spinoff, focusing on Minato Wakamiya, the main protagonist, Chloe Flockhart, Minato's best friend, Sophia Fairclough, the younger sister of Ernest Fairclough, Nina Achenwall, a Strega whose powers are invoked through the mental image of a deck of cards, and Yuzuhi Renjouji, a childhood friend of Ayato Amagiri who trained in the Yatsuka Dojo of the Amagiri Shinmei Style, all students of Queenvale Academy for Young Ladies.

[45] A manga adaptation of the spinoff Wings of Queenvale novels by Shou Akane premiered in Kodansha's Bessatsu Shōnen Magazine in August 2014, and ended in September 2016.

Directed by Manabu Ono and Kenji Seto, an anime adaptation of the series was broadcast from October 3 to December 19, 2015, with a second season following from April 2 through June 18, 2016.