Shuriken OriginThere is very little
historical documentation available today on the shuriken art.
The primary reason is that it was a rather secretive art. The
technique of using the shuriken itself involved deception and
surprise, and the main schools that utilized such methods of
battle were also heavily involved in deceptive and secretive
activities. What documentation that may exist would be held by
the individual schools in the form of scrolls, the contents of
which would only be shown to trusted students of the particular
school. Furthermore, the simplicity and utility of the weapon
was probably not held in such high esteem as that of the
kenjutsu arts, which used highly developed techniques to wield
swords of great refinement and advancement in metal technology.
Added to this is the fact that the shuriken itself was a
supplementary weapon to the sword and other weapons within the
main martial art schools of the time, and hence probably did not
gain much popularity, even among students who were initiated
into the secrets of the schools they were member of.
Nevertheless, it did hold some historical and practical value,
as there are occasional mentions of the use of throwing blades
in the literature showing them to be held in a positive regard.
Today, there are many and varied types of shuriken, which
suggests that the development of the art was rather fragmented
and insular among various schools and areas. According to
Yasuyuki Otsuka Sensei, headmaster of Meifu Shinkage Ryu
Shuriken-jutsu, there were no standardized or formalized set of
rules governing manufacture and use of the shuriken blades as
there were with the katana, or Japanese sword, and this would
have aided in the proliferation of differing designs and schools
around the country.
Chikatoshi Someya Sensei attempted to form some sort of
categorization of shuriken in his book "Shuriken Giho", but
admitted that without historical records, such categorization is
purely speculative, and that there were a number of examples
that could not fit in his categorization method as well.
Nevertheless, such categorization can be useful today for the
purpose of describing and discussing the art and the items in
use.
Shuriken PrinciplesThe throwing star also known as a
shuriken, it is probably the most popular weapon people relate
to ninjutsu. The shuriken is an important ninja tool but is not
meant to be a deadly weapon, instead it is mainly used to
distract an opponent.
To distract an opponent it could be used to bridge the gap,
for example if the ninja wanted to get close to his attacker he
would throw a shuriken in the way someone might throw sand in
some ones eyes to gain a split second to enable an attack, or
maybe for an escape plan.
The shuriken was normally carried in concealed pouches of
seven, they were tossed both under hand and over hand at short
distances of about several meters. When throwing the shuriken
the wrist is snapped into a straight line with the wrist and
forearm.
Sometimes the shuriken would be held in the fist and the
sharp edges would protrude through the knuckles enabling the
ninja to scratch the opponent. Often the shuriken was left to go
rusty so as to cause infection to the scratches.