It is likely that this is a typographical error, a highly obscure username, or a personalized OC (Original Character) created within a specific fan community.
A yōkai from Nurarihyon no Mago who acts as a "String Assassin" or "Stringer of Joshu," often taking on enemies with specialized strings, and was historically a human criminal.
However, based on the components of the name, here is an analysis of what it might refer to:
Similar to Kubinashi (headless yōkai) from Nurarihyon no Mago or words associated with yōkai, which are Japanese supernatural monsters. Bladze: Likely a stylized spelling of "Blades" or "Blaze." Similar Characters and Topics