About A Vow of Shadow and Ash: An Enemies-to-Lovers Dark Fantasy Romance by J.R. Vesper:
She was built to be a weapon. He was forged to be a monster. Neither of them was built to survive wanting the other — but the war coming for both of them isn’t giving them a choice.
Wren Mercer wears gloves for a reason. One bare touch, and she doesn’t just steal a caster’s magic — she unmakes it, burns it out at the root, and leaves nothing behind. She’s spent six years hiding what she is to keep her little brother alive. Then the Crown takes him anyway.
There’s only one man in the city dangerous enough to get him back. Lucian Cross runs the Narrows from the shadows, deals in violence like currency, and hasn’t let anyone close enough to matter in years. He doesn’t do favors. He does bargains.
Her power, leashed to his command, until the debt is paid.
It should have ended there. Instead, breaking that bargain’s first target wakes something far older and far worse — the man who engineered Wren into a weapon before she was old enough to refuse, and who intends to burn every unregistered mage in the kingdom rather than lose her again.
Now Wren has to decide how far she’ll go for a bargain that stopped feeling like one. And Lucian has to decide if the empire he built to keep the world out is worth less than the girl he was never supposed to want.
Inside A Vow of Shadow and Ash, you’ll find:
🗡️ Enemies-to-lovers and forced proximity, with a bond that starts as a leash and ends as a vow
🖤 A dark, bloody magic system where every scrap of power costs something real
👑 A love interest with full “touch her and die” energy — and the body count to prove he means it
⚔️ A heroine who was built to be a weapon and chooses, again and again, to be something more
⚡ A slow burn that detonates into a war too big for either of them to survive alone
🔥 A hard-earned ending — no gutting cliffhanger, with the door left open for what’s next
The Narrows don’t let anyone leave unmarked. Wren was never going to be the exception.
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Author Bio:
J.R. Vesper writes dark fantasy romance where the magic is deadly, the bargains are dangerous, and the villains make the best love interests.
A Vow of Shadow and Ash is their debut novel — a dark, bloody love letter to enemies-to-lovers, morally grey characters, and slow-burn tension that actually pays off. When not plotting a kingdom’s downfall, Vesper is probably still thinking about the next one.
More books are already on the way. Follow for updates — the next one won’t wait long.