However, many schools believe that they originated from warriors having their spear point or naginata (Japanese halbred) broken while on the battle field, who was required to immediately fight with the handle.
ただ、多くの流派で戦場で槍先、薙刀先を折られた時に、直ちにその柄をもって戦った事が発端となって編み出されたという謂れが伝わっている。