Immortal Primal Beast (不死の星晶獣) is the nineteenth episode of Granblue Fantasy: The Animation.
Lyria, Io, and Orchis have been swallowed by Celeste.
Left behind, Gran and the others search for a way to save them, along with a ghost girl, Ferry, whom they met in the village.
Meanwhile, the girls join forces to search blindly for a way out of the ghost ship's belly. Io looks on warmly as, little by little, Lyria and Orchis begin to build a bond. But the further the girls advance through Celeste's body, the stranger Io acts...