Hyōōjashu

The Hyōōjashu (豹王主, Hyōōjashu, "Panther King Lord") is the signature sword of Akuyo. It was actually the first tool he'd ever picked up in his life, as it formerly belonged to his father. After killing his own flesh and blood where he stood, Akuyo took Hyōōjashu as some sort of trophy which is the symbol of his long time suffering. The sword isn't known to possess any type of special abilities other than being able to fire off his techniques, as well as draw kanji in the atmosphere.