Comment by 1life is too much on Just want to read a

@Just want to read a  Well not all stories will be to your liking.
There are those who like a fast-paced manga, others a slow burn or maybe something in between. A story doesn't need to be for entertainment as it can be for educational purposes or others.
Furthermore there are those who like reading more than seeing which leads to the creation of manhwas like this one where it focuses more on reality than fiction in regards of facial and oral expressions. There are many in the world that wouldn't curse or say their emotions with stuff like "Woah" or "Eek".

So to finish this rant:
It's not that the manhwa lacks emotions, it's just that they're rational about their character and thinking proggress. Besides our MC has the Cold-Blooded Nature which if you actually read it's description on Chapter 2 - Page 2 it says: "You will ALWAYS exhibit an unrelenting rationale in ANY situation. You are completely immune to anything along the lines of Mind Control like Denouncement or Brainwashing."

That's it from me, have a good day!