Gouman Reijou wa Chi no Keiyaku de Ai o Shiru

Silwyn Rigwon, the youngest daughter of a frontier marquis, possesses an unshakable belief in her own beauty and worth. At eighteen, she remains unmarried not for lack of suitors, but due to her impossibly high standards. When a royal decree forces her into marriage with Aster Dilseon—her first love—she expects a fairytale reunion. Instead, she finds a cold, cruel husband who openly keeps a lover within his estate. Humiliated by both Aster and the household staff, Silwyn resolves to reclaim her shattered pride through revenge, targeting her husband’s mistress, Aura. Silwyn quickly uncovers a startling secret: Aura is actually a man disguised as a woman. She uses this revelation to blackmail him into aiding her scheme against Aster. Yet, as they work together, their alliance of convenience deepens into genuine affection, with each slowly revealing their true feelings. When Silwyn is pushed to the brink of death, Aura makes a desperate choice to save her, sinking his fangs into her neck to seal a vampire’s contract that binds their lives together forever. This romantic fantasy follows an arrogant noblewoman and a disguised vampire whose partnership of vengeance transforms into an unbreakable bond forged in blood.