I absolutely loved this drama though it had less romance then I expected I still think it's a really interesting drama that focuses on the opinions of the different doctors and how doctors and nurses work together in every situation. I really liked the two main leads they will go down as some of my favorites because of how well they portrayed the characters and their chemistry felt very natural. The other characters had interesting stories going on too and you can find it obvious who likes who very early on. The characters are very likable and stories for each of are quite interesting especially how they deal with them.
There are heartbreaking moments and heartwarming moments that they did incredibly well too.
Slight spoilers but this was only 30-40 chapters of the book ICU 48 hours which has 60+ chapters (at least from what I've seen from the audio book) This isn't complete because it's only like half of the book and unless there's another season I can understand why people find the ending kinda disappointing.
On the production aspect I think they only made it this far in this drama due to delays. It took 2 years to finish this season alone so I'm not surprised it ended the way it did. I still recommend watching it if you find medical dramas interesting and if you're not expecting much romance. This was definitely supposed to be a slow burn romance but got cut short unfortunately. The music is okay too, I mostly enjoyed the opening though.