The heroine had amnesia in a car accident and suffered from mild PTSD. The hero was a doctor. They had dated before, but they broke up due to a misunderstanding. The hero pretended not to know the heroine. When the misunderstanding was gradually resolved, the hero's brother died to save the heroine. The accident perfectly reproduced the elements of the original car accident. The heroine's PTSD became more serious. The hero and his family did not really blame the heroine. The hero repeatedly told the heroine that it was an accident and he hoped that you would be fine. The male protagonist helps with treatment