Phenomena
It's light diffraction, he tells her, when, she asks about the blues in the skies. He tells the same thing to Lemrina, when she asks.
Having to re-educate a princess on the ways of the Terran feels wrong - it's just like confirming that Asseylum is gone, for good. It's as if Vers doesn't acknowledge her anymore, not in person, not in writing, because they think that the 'Asseylum' façade Lemrina parades around with is the real thing.
He wonders what the phenomenon will be called once the Versians and Terrans all realise that 'Asseylum' is all but a ruse.