A ninjafs tool.
First of all, it is a throwing knife. This
is a jump tool. There are many kinds
of throwing
knives and the effect is considered
to have
been various by the form. Next is a
water
spider, this is a walker on the water
made
in order that a ninja might walk on
water.
Training
It seems that he gave the smell united with
the figure when a ninja disguised oneself.
The ninja was also studying the scent
as
the one information.