Synopsis

Siena departs, leaving her friends worried but optimistic. Shirone, meanwhile, has a profound conversation with Armin, where she discovers she is an 'Unlocker' who has opened the door to the 'Immortal Function.' Armin explains that she is capable of time magic and has a unique connection to the universe which she experiences in her dreams, and hints at a hidden, 'nameless existence' that Shirone is uniquely positioned to uncover. They agree to keep Shirone's secret abilities from Siena to prevent her from feeling guilty, as she feels responsible for Shirone's condition.