Ninjutsu is a traditional Japanese martial art that focuses on stealth, strategy, and unconventional warfare. It originated during the feudal period in Japan, primarily practiced by the ninja, who were covert agents skilled in espionage, sabotage, and guerrilla tactics. Ninjutsu encompasses various techniques, including hand-to-hand combat, weapon training, and survival skills. The practice of ninjutsu also emphasizes mental discipline and adaptability. Practitioners learn to use their environment to their advantage and develop skills in camouflage and evasion. Today, ninjutsu is taught in various schools, preserving its historical techniques while adapting to modern martial arts training.