Sai
The sai tools used in Sai jutsu
are subject to many different myths. From being used as a Buddhist object, to
agricultural implements. The truth is that they came from cooking and the
toasting fork from a spit roast. Metal in the rural areas of Japan would be such
a high value commodity that if was used only on essential items. In Okinawa they were gradually introduced secretly
among members of the warrior class as a fighting system. Most of the kata are named after
their creators, who were mostly noted Okinawan warriors.
In Sai jutsu, there are techniques such as utsu (striking), uke
(blocking), tsuku (thrusting), uchiotosu (striking down),
hikkakeru (hooking) and tsuranuku (piercing). Sai jutsu is
regarded as form of self-defense. Unlike other martial arts around the world in
which the basic idea is to defend yourself by fatally stabbing your opponent,
the primary idea behind the development of Sai jutsu was to subdue an
opponent without doing him any injury.
The efficient use of the weapon is much reliant on the dexterity of the practitioner with his thumbs, which the tang is balanced and rotated on along with the loosening and tightening of the grip from the small finger for striking and consolidating power