Once Upon a Demon's Heart Book by K M Moronova

✅ Premium Off-White Cream Pages

✅ Stitched Binding

✅ Matte Cover

✅ Local Premium Copy

✅ Language - English

✅ Dimensions - 5.5 x 8.26 inches

✅ Pages Amount 204

✅ Summary -

Once Upon a Demon's Heart is a dark romantic fantasy (romantasy) by New York Times bestselling author K.M. Moronova, first released in late July 2025. It is the first book in the Cruel Fates Duet and follows a demigod knight trapped in a lethal time loop who enters an arranged marriage with her sworn enemy to end a devastating war.