A ninja, also known as shinobi, refers to spies and assassins who operated secretly in Japan's historical periods. Predominantly active from the medieval era through the Edo period, ninjas were deeply rooted in Japan's history and culture. Their presence was especially significant during the Sengoku period (late 15th to early 17th century), a time of intense conflict among warlords vying for power. The primary tasks of ninjas included gathering intelligence, conducting sabotage, and assassinating key figures. Unlike samurai, ninjas had to operate in secrecy, mastering the arts of stealth and disguise to carry out their missions effectively. The Training ...