As Saki's group continues to make their way through the treacherous tunnels of Tokyo, they came across a underground river hidden within the caves. They split into two groups: One group with Satoru and Kiroumaru to drive away their pursuers and the other group with Saki and Inui to retrieve the submarine so that can continue their mission through the river. While making their way to the Psychobuster, they were attacked by a giant ragworm. Inui sacrifices his life so that Saki can continue with her mission. After retrieving the Psychobuster from an abandoned building, she take off towards the sun at daybreak. As she run pass the dilapidated scene of Tokyo, it reminisces her of the time with her last conversation with Shun. Then she saw an adult image of Shun right in front of her. (thetvdb.com)