In this 5th delivery of the Encyclopedia of Bugei, Shidoshi Jordan shows us the art of the Kopp-Jutsu. Translated literally as "the method of the bones," Kopp is the study in the arts dedicated to attack and control of the joints and bones of the human body. Originally fractures generated by their application seeking to obtain an advantage over the enemy, causing its inability to handle weapons like the Katana or other. Characteristic of Jujutsu and Aiki-Jujutsu, the Kopp-Jutsu is certainly a matter of greater efficiency within the studied Bujutsu.