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.
Miyama is looking after a woman who took a tumble down the stairs. The woman is grappling with prosopagnosia, a condition resulting from trauma that prevents her from recognizing people, even if their faces are familiar.
Sachiko is treating Maekawa, a patient whose left arm is paralyzed from a brain hemorrhage. Maekawa now sees his affected arm as belonging to a woman he deeply cares for, leading him to reject surgery on that arm.