Unnamed Memory, Vol. 1 (light novel): The Witch of the Azure Moon and the Cursed Prince

""My wish as champion is for you to descend the tower and be my wife." Climbing a deadly tower, Oscar seeks the power of its master, the Witch of the AzureMoon. He hopes her incredible magic can break a curse that will kill any woman hetakes for a wife. When the prince sees how beautiful Tinasha is, though, he has a better idea--since she's surely strong enough to survive his curse, she should just marry him instead! Tinasha isn't keen on the idea, but agrees to live with Oscar in the royalcastle for a year while researching the spell placed on the prince. The witch's pretty face hides several lifetimes of dark secrets, however--secrets that begin resurfacing..."--