Dotanuki 

Literally Meaning, "Sword That Cuts Through Torsos", In Japanese. The Dotanuki Was The Katana Carried By The Kaishakunin. It's Slightly Longer Then A Normal Katana and Is Weighted On The Curved Side, Making It Much Heavier Too. Because Of The Weight The Kaishakunin Was Able To Perform Kaishaku Usually In One Cut, Making For A More Humane Death.

"The Dotanuki Is The Ideal Weapon For Bisecting Politicians."

Dotanuki by Ibble March 9, 2005