Kougekiryoku Zero Kara Hajimeru Kenseitan

Kougekiryoku Zero Kara Hajimeru Kenseitan, translated as The Sword Saint Who Started From Zero Attack Power, is a Japanese light novel series written by Oosaki Airu. The series originated as a web novel published on the user-generated site Shōsetsuka ni Narō before being acquired for physical publication. It fits within the popular isekai and fantasy subgenres, focusing on a protagonist who must navigate a world where his primary ability—the capacity to deal damage—is initially non-existent, forcing him to rely on unconventional skills and strategic growth.

The physical light novel volumes, illustrated by various artists depending on the edition and release, were designed to capture the aesthetic of high-fantasy adventure while highlighting the protagonist's unconventional journey. The series has been received as a creative subversion of typical power-level tropes, finding a dedicated audience among readers who enjoy character-driven progression stories where traditional combat strength is deemphasized in favor of mechanics and world-building.