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While my friends have been forced to marry cyborgs, my father has prepared me to take the throne alone—no husband needed.
Unfortunately, that quickly changes when my father falls victim to an assassination attempt. To hold on to power, I need a husband, and I need him now. Preferably someone who is big, strong, and—ideally—ruthless.
The cyborg named Killer seems like the perfect candidate, but he hates humans with every fiber, screw, and circuit board of his being...
Historical romance meets space.* Princess meets cyborg. Completely over-the-top with all the best champagne flutes, fanciest ball gowns, and shiniest crowns you could wish for.  
(*No actual history or science involved.)