About the book: 2024 / Lee Yeonwoo returned to the past one hundred days before her husband's death, on the day when she asked Kang Sungjae for a divorce. During this period, she needs to fix everything and not let her loved one die. From this moment, a new stage of their married life begins. Now the husband and wife have to sort out their feelings and create a new ending to their story. But what exactly must Yeonwoo do to change everything and prevent Sungjae's death? New obstacles appear on the spouses' path. Only by revealing their true feelings to each other will they change their fate. Will Lee Yeonwoo and Kang Sungjae be able to create a new, undoubtedly happy ending to their story??