Contract Marrying Because I Am Terminally Ill

"Please be my husband for just one year! I only have one year left to live." The way she chose to escape from her vicious family was marriage. You have a secret lover, right? Im going to die anyway. Ill be your air-like wife to fill that empty space. It was nice to escape the house by proposing to Duke Kaiyen, the Grand Duke of the North and a war hero known for being cruel Gwama disease is not an incurable disease. It shouldnt be. The duke is so kind to me that its melting my heart! Duke, I thought you have a lover?