In a world overrun by demons, (Y/n) Miyakiro stands out as a bold and resilient demon slayer. Despite her missing arm, she pushes herself to be strong, hiding her vulnerability behind a prosthetic to avoid others' judgment. Inspired by the fierce Wind Hashira, Shinazugawa Sanemi, she even develops her own unique breathing technique. Will her skills catch the attention of her hero, or will her struggles go unnoticed? Join (Y/n) on a journey of strength, self-discovery, and the pursuit of recognition in a world where every fight is a test of courage.