Another patient at the hospital, Mami Takeshima, who was admitted for treatment for a benign tumor, begins experiencing a heightened fear of death and has a harrowing encounter with Mukoda, who wanders the halls at night, too afraid to sleep.
As his dreams continue to lengthen, Mukoda begins to experience amnesia when he wakes up, often having to be reminded by Kuroda as to why he was admitted to the hospital.
One night, while Kuroda continues to study him, Mukoda enters REM sleep again and finally experiences an eternal dream.
Kuroda, who had himself fallen asleep due to fatigue, awakens to see the result; with his spirit fleeing his body, Mukoda crumbles away into dust, leaving behind strange red crystals.
Shortly afterward, Takeshima confides to Yamauchi that her fear of death is lessening but that she, too, is starting to experience long dreams.
A few days later, one of the hospital's nurses, Miyama, informs Yamauchi that she had seen Kuroda entering Takeshima's room late at night, locking the door behind him.
Searching for evidence that may provide insight on the disturbing events that have unfolded, he finds a set of videotapes surrounding the case, and then discovers Kuroda's dark secrets.
Yamauchi comments on the poetic irony of the situation and prepares to leave, only for Kuroda to bludgeon him to death with a framed photograph of Kana.
After a final encounter with Kana's spirit, who bids him farewell, the Doctor turns around to find that horrifyingly, the whole incident has been captured on a set of cameras.