Kawakami Gensai

Kawakami Gensai (河上 彦斎, 25 December 1834 – 13 January 1872) was a Japanese samurai of the late Edo period. A highly skilled swordsman, he was one of the four most notable assassins of the Bakumatsu period. Gensai's high-speed sword discipline allowed him to assassinate targets in broad daylight.