Married First, Love Later: Take It Slow, Mr. Chu

To make up for the harm she caused her younger sister years ago, she takes her sister's place in an arranged marriage, marrying a hideous, paralyzed man. But on their wedding night, she discovers that he is handsome and strikingly charismatic. At the same time, she uncovers the secret he has been hiding, while the truth of her own tragic past slowly comes to light. He promises to help her get revenge, and she promises to give him a child...