The NH-23 was a type of Nekovalkyrja exclusive to the Ketsurui Clan. It was used from YE 23 to YE 33. Following the events of the YSS Miharu plot, the NH-23 PANTHEON-tapping capabilities were compromised and PANTHEON was modified to no longer grant such access and as of YE 34, any remaining NH-23 bodies are denied access to PANTHEON.