Vajra Treasure Void Sword

The Vajra Treasure Void Sword (金剛宝虚空剣(Kongōhō kokū ken)) is a beam saber with a hilt shaped like a Vajra. It is a "work of art forged by a master" that can supposedly cut though anything. In reality, it is simply a very high-energy output beam sword of exceptional quality. It was able to cut the Bio-Gundam's first form in half.

Trivia

• The vajra (meaning both thunderbolt and diamond) is a ritualistic implement in Buddhist and Hindu beliefs meant to symbolize firmness of spirit and spiritual power.
• The term kongō (金剛, lit. gold strength) is the Japanese word for the vajra.
  • Since the vajra as a weapon is said to represent the destructive power of lightning and the unbreakable quality of diamond, hence the alternative translation of kongō as "adamantine".
• A vajra sword or kongō-ken consists of a straight double-edged sword blade with a vajra handle. It is commonly depicted as being held by Buddhist deities such as Acala.
• In modern media relating to ninja, it's often common to see swords used as plot devices. One reason for this, besides representing old lineages, may be reference to Fudo Myo-o, a Buddhist dharmapala considered a patron deity of ninja traditions and represented holding a flaming sword in his right hand.
  • This might also be the reason as to why ninja are depicted with the more straight-bladed ninjato rather than a katana or wakizashi.