She was the Guild's most lethal weapon. He was her target. The blade was supposed to end him. Instead, it started everything. Sevra Ashborne has been an assassin since she was six years old. Raised in the Guild's Forge, stripped of everything except the kill, she has never failed a mission. When she is sent to murder the Dragon King of Ashenmere — the last of the Emberthorn dynasty, the sole operator of a continental defense system that keeps the world from tearing itself apart — she expects it to be her finest work. One cut. That's all it takes. But the bone dagger draws the wrong blood — or the right blood, depending on who's asking. When her blade catches Orion Vale's jaw instead of his throat, their blood mixes on ancient stone. The Twin Binding awakens. And the most dangerous woman on the continent discovers that she now shares a heartbeat, a pain threshold, and a ten-step kill radius with the man she was sent to destroy. If he dies, she dies. If she bleeds, he bleeds. And the bond is tightening. Orion Vale has been burning alone for sixteen years. The dragonblood that powers the continental defense system is consuming his mind, one eruption at a time. The Emberthorn dynasty has been dying for ten thousand years — one conduit per generation, each one burning brighter and shorter than the last. He has no heir. No partner. No one who can share the weight that is slowly, inevitably, killing him. Until an assassin's blade gives him the one thing the system was designed for and the dynasty could never produce: a second conduit. She is not Emberthorn. She should not be compatible. The bond should not exist. And yet the ancient engineers' ten-thousand-year-old system recognizes her — not as a weapon, but as the missing piece it has been waiting for. Now Sevra must choose. The Guild that raised her wants her to complete the mission — and they're holding her thirteen-year-old brother as leverage. The bond that chains her to the Dragon King is evolving, demanding trust she was trained never to give. And the continental defense system, running at a fraction of its designed capacity, is failing — producing the earthquakes and ward failures and preventable deaths that have been the Emberthorn monopoly's hidden cost for a hundred centuries. The blade was supposed to kill the dragon. The dragon is offering the blade a throne. And the choice between them will determine whether the continent stands or falls. A THRONE OF ASH AND EMBERS is the first book in The Dragonblood Binding , a complete enemies-to-lovers romantasy trilogy featuring a morally grey assassin heroine, a dragon king who burns alone, a bond that shares every heartbeat, and a magic system where consent isn't just romantic — it's physics. Tropes: Enemies to lovers. Forced proximity. Touch her and die. Morally grey heroine. Protective hero. She falls first. Found family. Slow burn with a devastating payoff. Heat level: 4/5 — Doors open. The bond shares everything.