Ninjutsu

忍術, literally: "perseverance techniques".

Kacem Zoughari defines ninjutsu as:

a collection of adaptable survival techniques that allows one to face the uncertainties of life and to respond to dangerous situations, through physical and psychological discipline, where one uses orthodox weapons in unorthodox ways.¹

According to Takamatsu Toshitsugu,

People

Bujinkan Budo Taijutsu lineage

• Toda Shinryūken​
• Takamatsu Toshitsugu
• Ishizuka Tetsuji, Sōke
• Hatsumi Masaaki, Sōke
• Kacem Zoughari

Other characters

• Fujita Seiko
• Koizumi Shizuo
• Kuki Takaharu

Hattori family

• Hattori Yasukiyoshi
• Hattori Masanari
• Hattori Yanosuke
• Hattori Kama
• Hattori Hanzo

Ryū

Koizumi Shizuo wrote that people know of as many as 73 Ryū​ in ancient times, based on a conversation with Takamatsu Toshitsugu.²

• Hakuun-ryū (白雲流)
• Kirigakure-ryū (霧隠流)
• Shirai-ryū (白井流)
• Shintō-ryū (神道流)
• Hachiryū-ryū (八竜流)
• Kasumi-ryū (霞流)
• Kurama-ryū (鞍馬流)
• Negishi-ryū (根岸流)
• Kōga-ryū (甲賀流)
• Kotō-ryū​
• Togakure-ryū
• Iga-ryū

Source Texts

Iga Hattori Keifu​