My Dog-Like Grand Duke

Seduce a stranger and marry him within a week. On the eve of her sister’s wedding, Princess Liët of Chalonne encounters an imperial prince dispatched as a congratulatory envoy. Instead of gifts, he delivers a chilling ultimatum: she must marry his cousin, Cain, and uncover his hidden weakness. To ensure her compliance, the prince threatens that it would be a profound tragedy if a princess on the verge of marriage were to suddenly pass away. Desperate to protect her sister's life, Liët sets out to seduce Cain, the formidable Iron Archduke rumored to be an artificial being devoid of emotion. However, her mission immediately hits an impenetrable wall. Coldly dismissing her every advance, Cain effortlessly deflects all attempts at intimacy, demanding she refrain from approaching him entirely. Driven by desperation, Liët eventually proposes a contract marriage, determined to become his wife by any means necessary. Yet, just as she prepares for endless rejection, the unyielding fortress that is Cain vanishes without a trace. Inexplicably, the once-distant archduke transforms, clinging to her with the sudden, unwavering devotion of a loyal dog.