His Princess > prompto argentum

I don't know how to have a summary for this story because it's the kind of story that's going on with just my head but I'll try.
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Astrid Bella Lucis Caelum, Noctis Lucis Caelum little sister by a year. She's there once Insomnia falls and goes to the trouble of people thinking she's dead. But once she's gets to a payphone, she calls her brother.