Tantō

A tantō is simply a small katana. Several chūnin, medical-nin and shinobi of Konohagakure when going to war wear them strapped to their lower backs. The version uses are double-edged and have no tip, meant only for cutting and defence. They carry the tantō vertically on the back specifically behind the shoulder, Sai is one of the notable ones that uses the tantō, which he carries on his back behind the right shoulder. and Kakashi Hatake in his childhood carried a special tantō, known as the. Gamabunta also carries one, albeit that fits his size. Q is using this too, with it placed on her back.