Heungmang Gongjagui Aewansae

Isabella, who was abused by her own father as the illegitimate daughter of a count, believed that only those who were sold in the marriage market would be worth their weight in gold. After being unilaterally broken off from her fiancé by his cheating fiancé and losing her usefulness, she entered the house of a man she met by chance. "The Duke of Ethan Holden, a terrifyingly beautiful man." He had a wonderful secret hidden from her like a cruel fairy tale...! The man she thought would be her salvation said to Isabella, "Did you enjoy your walk? Now, it's time to come into the cage."

(Source: Naver, translated)