Ishura (異修羅) is a Japanese light novel series written by Keiso. It originated on the novel posting websites Kakuyomu and Shōsetsuka ni Narō, before being acquired by ASCII Media Works, who published the series with illustrations by Kureta under their Dengeki no Shin Bungei imprint. As of December 2024, ten volumes have been released. A manga adaptation with illustrations by Meguri began serialization in Kodansha's Monthly Shōnen Magazine in March 2021. As of June 2024, its chapters have been collected into four volumes. An anime television series adaptation produced by Passione and Sanzigen aired from January to March 2024. A second season aired from January to March 2025.
Plot
The demon king is dead. However, the host of "Shuras", demi-god-like people capable of felling him, remain and are now effectively free to do whatever they want, with some becoming conquerors while others wander, indifferent to the world around them. Thus, with the identity of the one who slew the demon king being a mystery, these champions now spark conflicts among themselves, all to determine who is the mightiest and attain the title of "True Hero".