Beware of the Red Thread

After getting pulled into a novel, she possesses the body of a character called Leann. Other than the novel's main female protagonist, Leann is the only one who can heal people by seeing and removing the red strings. But when she heals an injured man on the street, the red string of fate connects the two of them together and there is no way to remove it! To make matters worse, the man she is connected to is one of the main villain in the novel, a grim reaper named Abell. Can she escape from him and live a peaceful life without hindering the original story of the novel? Source: Copin Comics