Summary
Princess Riette must shield her sister from a political crisis, compelling her to wed the intimidating Grand Duke Kain in just seven days. Dubbed the “Iron Grand Duke” for his aloof nature, he initially rejects all her efforts. As a last resort, she suggests a marriage of convenience, but to her astonishment, his frosty exterior melts away. He becomes unexpectedly tender and devoted, acting more like an adoring companion than the stern noble she expected, leaving Riette deeply confused by his newfound, affectionate behavior.