and were two of the many deployed by the ninja

Ninja

A or was a covert agent or mercenary of feudal Japan specializing in unorthodox arts of war. The functions of the ninja included espionage, sabotage, infiltration, and assassination, as well as open combat in certain situations...

 of Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. The main ryu

Ryu

* Ryū , a school of thought or discipline ., a book by Ryūnosuke Akutagawa* Ryū , a series by Masao Yajima and Akira Oze* Ryu , a common Korean family name...

(school) of ninjutsu

Ninjutsu

or may be:*the arts associated with espionage and assassination in feudal Japan, see Ninja*modern schools of martial arts claiming to be based in these traditions, see Modern Schools of Ninjutsu*fictional depictions, see Ninja in popular culture...

 that deployed such weapons were of the Togakure-ryū

Togakure-ryū

is a historical tradition of Ninjutsu known as the "School of the Hidden Door", founded during the Oho period by Daisuke Nishina , who learned his original fighting techniques from a Chinese monk named Kain Dōshi. However, the history and early lineage of Togakure-ryū may be impossible to verify...

.

Tekagi-shuko

Although many variations of this particular weapon existed, they typically consisted of two metal bands conjoined by a leather strip - one fitting around the palm and the other around the wrist. The upper band featured a variety of spike/claw-like protrusions that were useful for both offensive and utilitarian purposes, as well as in defensive techniques (disarming and such). The use of this weapon is still taught by the Bujinkan

Bujinkan

The Bujinkan is an international martial arts organization based in Japan and headed by Masaaki Hatsumi, it is best known for its association with ninjutsu. The system taught by this group, called Bujinkan Budō Tai jutsu, consists of nine separate martial arts traditions .-Origins:Hatsumi's...

 dojo

Dojo

A is a Japanese term which literally means "place of the way". Initially, dōjōs were adjunct to temples. The term can refer to a formal training place for any of the Japanese do arts but typically it is considered the formal gathering place for students of any Japanese martial arts style to...

 under Masaaki Hatsumi

Masaaki Hatsumi

Masaaki Hatsumi Masaaki Hatsumi Masaaki Hatsumi (初見良昭 Hatsumi Masaaki, (born 2 December 1931) refers to himself (and is generally recognised) as the 34th Togakure-ryū ninpo Soke (Grandmaster), and is the founder of the Bujinkan Organization. He currently resides and teaches in the city of Noda,...

and the Jinenkan under Manaka Unsui.

Neko-te

The Neko-te (cat paw or cat claw) is a name given to several contraptions fitted in or over the hand, with sharp blades or pins sticking out. Some of these original neko-te that were shaped like metal gloves had pins standing up from the metal plate covering the back of the hand, designed to trap other weapons and leave minor damage when required, while the long claw-like tips of the fingers were used to stab at arteries and other vital areas, and to scratch through exposed skin.