The pressure mounts on Miyama as she takes on the responsibility of coordinating three recently appointed neurosurgeons in the neurosurgery department where she is employed.

Miyama is approached by a distressed woman claiming to be troubled due to Kuroiwa's stalking. Meanwhile, Nishigori harbors a profound aversion to his patient struggling with suicidal thoughts.

In the midst of the neurosurgeons' tumultuous personal lives, Miyama observes an anomaly in Nishigori's behavior.

Nishigori's mother, suffering from amnesia after previous surgery, is admitted to the hospital. Kuroiwa suggests a second operation to restore her memory, yet Nishigori's sister opposes the idea.

A brilliant pianist opts for a procedure to save his hearing, rather than extend his life, due to an auditory nerve tumor. Imadegawa attempts to delegate to Nishigori, who has lost confidence.

Once a coworker of Miyama, Osawa is now a patient under Nishigori's care, reporting sightings of his doppelganger. Osawa's history includes being dismissed by Miyama ten years ago, an event that led to his suicide attempt.