We just... know it. We just know that it's coming for us.
[ Sighs a little and looks up at the dome. ] I don't know if it's some telepathic message, or just a feeling, but a Haibane who has earned their Flight is summoned to the Flight Stone at the forest and disappears in a pillar of light, leaving their halo behind.
[ It all feels far away to her, and she wonders if her own Day of Flight could come for her in here. ] So there! Not that much of a difference as to how normal people go, hm?