Mikado  

Imperator Librarius, Izanami, Saya, 帝

Saya was once the leader of the Novus Orbis Librarium, younger sister to Jin Kisaragi and Ragna Bloodedge. Currently, she serves as a vessel for Izanami, the true antagonist in the series. Under Izanami's possession, Saya has lost all emotions and is highly literal-minded, with an intense desire to bring about global destruction. In cutscenes from Ragna's story, it's evident that Saya was once close to her brother and confident as a young girl. Even while being controlled by Izanami, the Goddess acknowledges the strong bond between the real Saya and Ragna. Despite her current state of mindlessness and obsession with death, Izanami remains devoid of emotions and highly focused on achieving her goal.