"You are my wife. I won't let you get away." It was supposed to be a loveless, arranged marriage with my first love...

Sarah had been close to Lewis, the eldest son of Duke Brown, since childhood. He was also her first love. However, Lewis got engaged to Sarah's older sister. Sarah was shocked, but in order for her beloved sister to be happy, she decided to keep her feelings for Lewis a secret. However, just before their wedding, the Brown family suddenly broke off the engagement after learning that her sister was unable to bear children and chose Sarah to be Lewis's bride instead. Sarah didn't want to marry Lewis, who had abandoned her sister... but she couldn't defy the duke's family. She decides to marry Lewis in her sister's place for her family's sake, but she ends up being embraced by him every night after their wedding until she becomes pregnant!