Yagyu Darkrood may refer to:
Yagyū Munetoshi was a famous Japanese swordsman. He was a student of Kamiizumi Ise-no-Kami Nobutsuna and later became known as a master of the Shinkage Ryu school of swordsmanship, eventually coming to develop and expand upon the school's teachings, where it would be known as Yagyu Shinkage Ryu. Maxims and school focus were centered on a new wave of warfare, turning to a greater emphasis on speed, reservation, free flowing movement, smaller scales of duels, and the concepts of Satsujinken (lit. "Swords that Kill") and Katsujinken (lit. "Swords that Give Life"). Yagyu would become famous for introducing the style to Tokugawa Ieyasu, and urban legends revolve around him teaching the style to the ninja of Iga and Koga.