I'm a nurse and have worked in palliative care so this hits differently. I had to take a break after 10 episodes because i was copping too many feels. Im pretty sure i ugly cried in every single episode (especially the episode with Son's last moments) . I had watched Ji Chang Wook in other shows before but he really came through this time. My heart raced and I tensed up during the conflict scenes. Won Ji An also did a great job, I had never watched her in anything but i couldn't help hating her character. Ill have to watch til the end to give a review on the plot but for now i just wanted to say watch this if you want to watch something deep and meaningful. Skip this if you are looking for something light.
PS: Also wanted to add that its not very realistic that Nurse Seo always looks so free/relaxed/energetic during work and had loads of time to workout/volunteer lol.