kaishaku
A backstabbing buddy of the Shogunate who would behead guys who messed up. They’re like the samurai version of a bad boss.
Ogami Itto’s kaishaku was so good, he could behead a man before the guy even realized he was dead.
The kaishaku in the movie was a real pain. He didn’t care if the guy was trying to die with honor or not.
My friend’s kaishaku showed up during his seppuku and said, 'You’re not even worth the trouble.'