Good books 
In 2030, a young widowed professional woman in a city had the super ability of painless and rapid self-healing after eating what is said to make people immortal. There has been a demon king in this city for five years. His husband was killed by him, and his reputation and life were destroyed. With her powers, she incarnated the girl who was killed with her husband in the past five years and took the initiative to solve the murder that had not been solved in the past five years to avenge her husband.
