Nu-13

An artificial human born in Kagutsuchi, this deadly combatant was programmed to eliminate any threats approaching the Gate. While often appearing emotionless, she displays a dangerous, yandere obsession with Ragna the Bloodedge, driven by a desire to merge with him and destroy the world. As a replica of Saya, she shares fragmented memories with Ragna's siblings. Though she eventually sacrifices herself to protect Ragna from Hazama, her mysterious ability to regenerate suggests her story may not be over.