Dinner Time Nezu and Nagumo prepare to enter the sewers. Shadow-Shiori appears to both Mio and Tetsu. As Shiori is technically a missing child Tetsu is forced to follow her. After killing the Shadow-babies Shinpei sees the cave is covered in coral and connects to the ocean. Ushio's arm grows noticeably worse and as the only way to heal it would be to copy Ushio again, which is impossible. To temporarily stop the pain she deletes her damaged arm. Tokiko suddenly appears. Nezu realises the cave is the lost Hiruko Cave where Hiruko originally washed ashore, the entrance to which was sealed by the army during the First Sino-Japanese War. They witness Mio and Tetsu and decide to save them. Shinpei attempts to shoot Tokiko's shadow, only to realise she is human. Sou's father is seen with the murdered body of Officer Miura that he feeds to the Shadows. Sou realises his father and sister are both working with the Shadows. Nezu and Nagumo meets Shadow-Shiori and realise she is actually Mother disguised as Shiori, whom Nagumo greets by the name Haine. Giant-Shadow appears and kills Nezu before seriously injuring Nagumo. Tokiko decides to show them the truth but asks Shinpei to keep it a secret from Mio, no matter what happens, and Shinpei agrees. She takes them to a shrine where Haine is shown receiving medical treatment.