The story follows Taida(Female Ritsuka), the final master of Chaldea, as her mental health deteriorates after every fight within the Lostbelt, bringing her closer to her breaking point. Mash and Da Vinci devise a plan to help distract her from her trauma by traveling to a carnival singularity in Romania, But something's a miss, as a darker force lurks within the shadows. After A Lostbelt is a fan comic with the approval of MangaDex staff.