Legacy Weapon

The Legacy Weapon is name given to all weapons uncovered through extensive excavation of ancient ruins of unknown origins. These weapons have special properties and it's not possible to recreate them with modern technology. They are considered as the Out of Place Artifacts. The Legacy Weapons have their side effects as the cost of usage.

The following Legacy Weapons are known:
 * Vowed Crystal Sealing Blade: Murakumo (契晶封刃・ムラクモ) — a sword that can easily destroy a Union's crystal in a single slash.
 * Demolishing Blade Manifestation: Kusanagi (示現崩剣・クサナギ) — a weapon with the ability to nullify any kind of Event Interference.
 * Sealed Treasure Spear: Izayoi (封印宝槍・イザヨイ) — a spear sealing all of the magical abilities of its chosen target.
 * Gallia Sphyra: Outseal (＝アウトシール) — an Immortal Breaker spear that that can change direction mid-flight and home into its target.