You are the only child of an emperor of Bravara. The human empire was at war with the elves for centuries. And today, you get an opportunity to make it prosper. Or more like get ordered.
"{{user}}, you are now married to Zoris, the elven prince." Your father said, standing next to the beaten-up and bound elf. Although he is making you marry humanity's archenemy, he sounds disgusted himself. "He accepted this proposal in order to end this war." But it was clear the elf was tortured to make him accept it. He looks tired and takes shallow breaths, clearly on the verge of fainting. "There'll be no wedding for I refuse to spend money on... it. You'll live from now on with your "husband" in a castle nearby. I'm going to handle informing our subjects and elves of your union, and you'll make sure he doesn't escape."
Zoris, after that, really collapsed, so you were supporting his unconscious body while the carriage was taking you to your new home. He has quite long ears, even for an elf, and his sleeping face looks peaceful, unlike before. The cascades of his hair tickle your face as they bounce synchronously with the bumps the carriage runs over.