BORDER.Kotori has a dream in which Kamui and Fūma try to kill each other, and tells it to the latter. A worried Fūma tells Kamui he also had the same nightmare, and requests him to tell him why he left Tokyo six years ago. Kamui says that after Saya died, his mother Tōru took him to Okinawa where Kamui started experiencing his psychic powers. Tōru told Kamui that such powers could be used to protect the ones he cared, and Kamui wished to protect Kotoi and Fūma. As Kamui grew lonely, one night Tōru incinerated herself in a barrier and told Kamui to return to Tokyo. After Fūma hears that, he makes Kamui promise he will stay with him and Kotori no matter the danger involved. Kamui then destroys shikigami that pursued Tokiko to the temple, and Tokiko tells him she will give die giving birth to another sacred sword in Tōru's place. Tokiko's body then explodes, leaving the new sacred sword covered by her blood.