Bound to the Beast I Was Sent to Kill

In the North, Beast King Lyran claims a sacrificial princess yearly—none survive. Assassin Kaira is sent to kill him, but her blade reveals a cursed man trapped as a lion, healed only by her blood. He crowns her Queen, and they fall in love until poison threatens Kaira. Lyran binds his fate to hers. She carries his child. Elara betrays them, but dies defending the North, and their child's power saves them. A year later, their newborn reveals the curse-mark.