What is "shurikenjutsu"

is a general term describing the traditional Japanese martial arts of throwing shuriken, which are small, hand-held weapons used primarily by the Samurai in feudal Japan, such as metal spikes bō shuriken, circular plates of metal known as hira shuriken, and knives ( tantō).

Shurikenjutsu was usually taught among the sogo-bugei, or comprehensive martial arts systems of Japan, as a supplemental art to those more commonly practiced such as kenjutsu, sojutsu, bōjutsu and battlefield grappling kumi-uchi (old form jujutsu), and is much less prevalent today than it was in the feudal era.