The Royals of Arcane book - 3 Skylar only agrees to marry her to keep her as a "political hostage" against King Alaric. He wants to use her as leverage to get justice for his sister, Garnet. Vesperia's magic is passive it kills those near her, she has never been touched by another human being apart from her older mother and older brother. Skylar, being the King of Air, is the only person who can potentially survive her. By using his Wind-Calling magic to constantly circulate fresh air or create a vacuum, he is the first person who can actually stand within three feet of her. Vesperia has been told her whole life she is a monster. Skylar is the first person who isn't afraid of her. His "rebellion" against the law includes rebelling against her "destiny" to be a killer.