Episode 9 : The Voice Calling from the Sea / Umi kara no Yobigoe.
Eiko invites Shin to go out with her as she investigate the abandoned Japanese Coast Guard Deep Submergence Vehicle. Eiko reveals to Shin how Ryo had been potentially guilty when he agreed to consent to a brain transfer for Jun, which explained the appearance of Yuki a few days by Shin and Ryo. Eiko also tells Shin of an attack that she experienced in college as a nautical diver. In the midst of the investigation in the waters near the Ayanagi City coastline, the same feathers began to cover almost the entire sea. Shin once again encounters the mysterious woman in a dream, trying to reach out to him.
