Let me say this. If you have nothing else to watch and feel bored, then I would recommend this. I wouldn't note that this series is a MUST watch but hey! If you have nothing to watch, go ahead and give it a try. The main problem with this series is that AFTER they get into a relationship, they cut down the chemistry between the characters. There is a lack of intimacy between the characters. I don't mean sex or kissing scenes (note: you don't need these aspects to showcase intimate moments between characters), but they act more like brothers than lovers.
Moreover, the side stories are okay but I did end up skipping a lot of the side stories since I was simply uninterested. Since this series is top-rated, I would like to tell the watchers to lower their expectations. Don't expect too much! Honestly, this series is just a chill watch. Nothing too extraordinary and nothing too blunt can be expected. It's ok, not bad.