Not necessarily, there can be romance, just not enough to have in the genre or tags. Vincenzo is a perfect example, no mention of romance but there was a bit.
I've been meaning to ask this for ages . . . is the amount of workplace screaming/shouting and physical abuse…
Yes, Koreans haven't moved on from ancient times yet. They only dress differently and use technology, but other that you wouldn't know the difference between now and 500-1000 years ago.