Kazuki, Maya, Kenji, and Canon, all accompanied by Kyōsuke, charge straight towards the entrance of the core in order to rescue Sōshi, who is revealed to be inside the core. During the operation, Tsubaki is experiencing the death process to complete the learning process for the Festums to understand life and death. Moreover, she will need to return to the core to complete this process. Kenji maps out a plan of attack, Canon confirms the battle formations, and Maya reminds that all pilots will return to the island alive. Sōshi is being controlled by Idun, who uses the Siegfried System to exploit the weaknesses of the pilots, that being to break their battle formation.