Legacy Weapon

The Legacy Weapons (発掘兵装, Regashi Wepon, lit. Excavated Armaments) are weapons with special properties.

Information
Those are similar to the Nox Nyctores. They also seem to have side effects at the cost of usage.

List of all known Legacy Weapons

 * Vow Crystal Seal Blade: Murakumo - Two blue swords that resemble the blades of Lux Sanctus: Murakumo with a longer handle. It can easily destroy the Union crystal. The price of usage is unknown.


 * Manifestation Demolition Blade: Kusanagi - Also known as the God-Killing Sword. Four red and black swords that resemble the blades of Lux Sanctus: Murakumo. Price is "Shared Existance".


 * Izayoi - A halberd with two shields flying around it. On the swords and shields are eyes. It's price is blindness, a side effect shared with the Sealed Weapon Izayoi.