It's normal for romantic comedies to not be well written, or have a large number of cliches, as long as the romance is fluffy and fun & the rest not too bothersome, then it's not very difficult for me to enjoy them & write a positive review. With Mobster though even the romance is very lacking. Maybe part of it is me having kdrama fatigue, but good gawd this whole very shy elementary school tier romance involving middle aged people is really not doing it for me. It was enjoyable until they started dating, but after that it has gotten really bad. I'm sure the writer thought it would be fine, since the second couple's romance is more mature, but in my view the second couple barely had anything built up before their relationship shifts..
The triangle ends relatively on time, but the second ML is a really annoying character in the first 66%~ of the drama and all of his scenes are very skippable..

As for the rest outside of the romance, it's very very sad. It's super silly and immature, way more so than what we see in an average kdrama that is. Calling this whole mobster / not mobster shebang trash would be perhaps a bit uncalled for, but it's close. Most importantly, all this is not very funny.

The emperor penguin thing is cute, but that's like the only thing..