Musha Weapons or Mushato. These are class specific variants of katana and nodachi weapons. Mushato can only be wielded by Musha companions. With these equipped, they can perform their unique skills that doesn't require mana to execute.

NORMAL WEAPONS ADDED IN THE GAME
Any One-Handed Sword (x4) = Katana
Any Two-Handed Sword (x4) = Nodachi

TO UPGRADE:
Katana (x2) + Grand Health Potion (x1) = Enhanced Katana
Nodachi (x2) + Grand Health Potion (x1) = Enhanced Nodachi
Hint: The product will be based on your character's level.

REFORGING RECIPE:
Enhanced Katana (x1) + Grand Health Potion (x1) = Enhanced Katana
Enhanced Nodachi (x1) + Grand Health Potion (x1) = Enhanced Nodachi

RECIPE FOR MUSHATO:
Any Katana type sword (x1) + Grand Mana Potion (x1) = Katana Issei
Any Nodachi type sword (x1) + Grand Mana Potion (x1) = Nodachi Issei

TO UPGRADE MUSHATO:
Katana Issei (x2) = Katana Nisei (req lvl 7)
Nodachi Issei (x2) = Nodachi Nisei (req lvl 7)
Hint: This process is repeatable until you reach the 9th Generation Mushato with level 64 requirement to wield

Musha weapons are included in the mod (open link for reference purposes only)[www.runicgamesfansite.com]

A musha is only equipped with passive skills and a Charge trigger skill called Shindo Ryu. A skill that activates the Musha no Chikara, these are effects that will definitely enhance their overall fighting capabilities.

With their lack of active skills, they excel in weapon-enabled skills. These weaponry can activate the musha skills called KENDO. For each Kendo skill, an enhanced version can be executed by applying skill points to the BUSHIDO skill set. Kendo skills are replaced/improved by the Bushido skills whenever the Shindo Ryu is triggered.

ACTIVE SKILLS:

Arekuruu no Ken (Raging Spirit Technique) - Launch fort unto enemies with devastating swirl of fiery slashes.

Kaiten no Hangeki (Spinning Counterattack) - Chance to form a 360 degree slice unto the wielder's surrounding if got struck.

Ken no Reikon (Heart of the Sword) - Weapon and wielder are now unified and exceeds weapon sharpness.

Ken no Seishin (Will of the Sword) - Listening to the mushato, allows the wielder to know what it wants, and that is, to kill its opponent then gain strength from it.

Mokusatsu no Ken (Hidden Slash Technique) - The wielder can now see to his enemy's intentions and preemptively attack them from behind.

Skill 6 - A weapon enabled skill that can only be used with the legendary mushato named Muramasa

Skill 7 - A weapon enabled skill that can only be used with the legendary mushato named Masamune

PASSIVE SKILLS:

Cold Steel Mastery

Shatter Storm

Frozen Fate

PASSIVE SKILLS:

Sword Mastery

Fire and Spark

Rampage

PASSIVE SKILLS:

Dodge Mastery

Executioner

Charge Domination