The ninja also used the spear in its arsenal the spear came from the Yagyu Ryu, through the Koga Yamabushi Ryu Ninjutsu into Dux Ryu Ninjitsu. Although Dux Ryu is a modern form of Ninjitsu this kata is in fact from the Dux Ryu Ninjitsu style. Black Belt stduents of Hanshi Frank Dux perform this Kata in Bercy France
