Her death serves as a catalyst for the final arc, emphasizing the "merciless choices" inherent in the ninja world.
During the mission, a mechanical ninja unexpectedly aids Ittoki by placing grenades on the charging system. After the resulting explosion disables the Asura units, it is revealed that the mechanical ninja was actually Kirei Kisegawa in disguise, choosing to help Ittoki despite her previous ties as a double agent.
Episode 9, titled "In the Light of Dawn," serves as the series' most critical turning point, shifting the narrative from a school-based action story to a high-stakes tragedy. This episode centers on the Koga clan's full-scale invasion of the Iga village and concludes with a shocking betrayal that permanently changes Ittoki's life. Plot Summary: The Invasion of Iga
The episode begins with the Koga clan launching a massive assault on the Iga village using an army of —advanced mechanical ninjas—to overwhelm the Iga's traditional defenses.
