The Anti-Observer Armaments (対観測者用兵装 Tai-Kansokushayō Heisō, localized as Anti-Observer Weapon) were created by humans in ancient times. It is called by this name because it’s able to neutralize the Event Interferences of Observers, and also possesses the Immortal Breaker, power capable of killing those outside of reason.
The following Anti-Observer Armaments are known:
- Sealed Armament: Izayoi — able to completely absorb specific light waves and fully neutralize Event Interferences,
- Weaving Zero: Izayoi — able to kill Observers and other creatures outside the reason,
- Murakumo Unit — designed to kill gods,
- Black Beast — self-Observing weapon.
