There were many things to enjoy about this show. If you've watched a good share of Korean BLs before, you might recognize the two main characters of Kissable Lips. This show doesn't have a supernatural theme (thankfully?) and I believe it was developed much more nicely, both in terms of plot and in terms of character growth.

- The trope that starts off this drama is the forced proximity, which is a personal favorite. Most of the story revolves around their work days in the company, and (surprise!) they ACTUALLY WORK. It might sound absurd to be surprised about it, but for some reason it's hard to find office romance series where the main characters actually work instead of just flirting with each other all the time, especially if one of them is a rich and spoiled chaebol.
- The plot is actually interesting. We don't just see the characters randomly growing fond of each other: they actually get to know about each other's personal struggles and private lives, they support each other at work and outside of it, and most importantly they clash with their personal ideas while also reflecting on themselves to change for the better. The fact that they're a team manager and an employee might make it sound like there's an overwhelming power imbalance, but the writers were able to make a very healthy and balanced couple out of these two. Loved to see it.
- The acting, the set, and the photography were pretty good. It didn't have the feeling of one of those huge, high-budget dramas, but I felt like the production team poured a lot of work and care into it.
- The relationship dynamics were pretty good. The chemistry between the two main leads was excellent (maybe the fact that they starred in another drama together in the past helped with it?), but I also liked to see Ho Jun with his father and the secretary, Jae Yoon and his friend/crush, the two of them with their team mates. The atmosphere was always lively and all the characters are likeable, I never felt bored.
- The changes in the characters from the beginning to the end of the series were blatant, but their build-up was SO. WELL. DONE. They become a lovely couple without leaving me wondering how did it happen, nor did it ever feel like their character development was out of place.

- There is a flaw in the plot, which is an overused plot device that lots of series (especially Korean BLs) use toward the end for a bigger dramatic effect. I'm not going to say what is it since I don't want to spoil anything, but I feel like this is what made me rate the series with a 9 instead of 10.

In conclusion, I really have to recommend this one. It might not be one of the best BLs ever, but it was cute and fun to watch, and also so well done under many aspects that it would be a shame to skip it.