The ''ancient katana named Masamune'' is a unique Like [[List of items (CLIVAN)#Weapons|katana]] with an [[illithiumMasamune]] blade and [[sapphire]] hilt. It has a moderate chance to deliver massive damage upon striking an enemy, prompting the message:  "Your Masamune's slash cuts the ''<monster>'' so deep you thought it was cut in half for a moment." Like [[Muramasa]], Masamune delivers striking damage instead of slashing damage due to a scripting oversight.

Masamune Muramasa is an ancient sword named after its legendary creator, [http://en.wikipedia.org/wiki/Masamune MasamuneMuramasa Muramasa Sengo] . Muramasa was a legendary exceptional swordsmith widely considered to be the best in Japanese historywhose blades were known for their extraordinary sharpness. Masamune's blades Unfortunately he also had a reputation of superior beauty propensity for violence and quality not commonly found in an era where quality steel was a rarity. Legend tells of a competition between [[Muramasa]] and his master, Masamune to see who could produce the finest sword. Variations of the tale exist but the general story remains the same widely considered mad - Muramasa and Masamune produce their masterpieces and test them by placing them in a river. Muramasa's sword slices anything it touches cleanly in half - including fish, leaves, and even the air blowing past it. Masamune's sword leaves everything in the river untouched, and fish even approach it out of curiosity - in some versions of the tale it even sews Muramasa's victims back together. Depending on the tale, a third party intervenes quality said to judge, ruling that Muramasa's sword - while of unquestionable quality - is evil and bloodthirsty, whereas Masamune's sword is holy and just for not causing unnecessary harmhave seeped into his blades.

HoweverLegend tells of a competition between Muramasa and his master, Muramasa lived a full 300 years before [[Masamune, so it is impossible this encounter ever happened]] to see who could produce the finest sword.