As Saki's group makes their way through the treacherous tunnels under Tokyo, they came across an underground river within the caves. They split into two groups: Satoru and Kiroumaru to drive away their pursuers while Saki and Inui go to retrieve the submarine so that can continue their mission through the river. On the way, Shun appears to Saki and suggests there is no fiend. While making their way to the Psychobuster, they are attacked by a giant ragworm and Inui sacrifices his life so that Saki can continue her mission. After retrieving the Psychobuster, a small pendant containing a liquid, Saki takes off towards the sun at daybreak. As she runs past the dilapidated scene of Tokyo, she is finally able to recall her last conversation with Shun as her lost memories are restored and she sees an image of Shun before her.