Bound to the Duke on My Ex-Fiancé's Night

Elin, the last hope of a fading noble family, ends his engagement to a cruel fiancé and in doing so awakens a forbidden Purifying Flame within himself. He seeks shelter with Duke Cedric, the realm's most feared sorcerer and his ex-fiancé's uncle, and the soul-bound contract between them slowly deepens into something far more personal. When a dragon-born army demands that their combined fire wake a sleeping god, the pair must descend into the Dragon Bone Abyss and fuse their opposing flames to keep the kingdom from burning.