Yato simply calls his Shinki name, "Sekki", and Yuki transforms into this awesome and powerful sword used to battle the threats of mankind. While his formal name is Yukine, when Yato calls out the spiritual Shinki name of Sekki, he literally goes from being a boy, to becoming a silver sword. The outward appearance of this sword replica is that of a katana with custom mount. Running the length of the carbon steel blade is the Hi (or blood groove). The steel has been quenched to produce the two-toned black colored appearance, so it is scratch resistant, and will last a lifetime. It has no Tsuba (guard) and the Tsuka (handle) is wrapped entirely in white Ito. Comes with a free leather sheath and should strap that allows you to holster this amazing Norigami Anime replica sword.