So I read some review certainly far more critical than this one will be, and I think I'm probably far too generous with this particular show (which, in hindsight, makes me want to go back to others I rated and demolish them).
While I particulary enjoyed the simplicity of the storyline, notably the absence of what I call the "side character one-sided lover/bitch" and the lack of "no, don't be gay, don't ruin your life for me"-pity arc, there was also severals problems.
First : some characters were introduced, obviously with some kind of story in mind, and just disappeared. I'm thinking of Alex, who obviously would have been a "one-sided lover/bitch" with a stalker potential... but wasn't and was never mentionned for several episods. His character have essentially no purpose, no raison d'être so... why ? (I mean, if it was to show that Pharm is a soft character who needs protection from the more "hard" Dean... well, it was already implied and unneeded by the fact that he suffers from several phobia).
Second : side characters like Team and Manaow, while more present in the storyline, don't get there story except at some point (I was quite shocked when Team goes to Win's place because of his insomnia like it's a common occurence... even thought I missed an episode). So, either don't mention it at all or give them a consistent storyline with enough appearances to back it up.
Third : it's probably a mix of cultural differences and what I feel are bad choices from the director but... everyone accept far too easily that Pharm and Dean are the reincarnation of Intouch and Korn . (I.E Pharm 's granpa/Korn's dad who immediately know where Pharm went without ever meeting him and knowing absolutely nothing about him and his history)

I won't go in too much detail about the screenwriting, cuz I didn't take notes while watching each episode and wasn't focus on that (also, it's been a while since I took film analysis in Uni). What I can say about it, because it jumped to my face... too much staring/kissing scenes who take too much times. We get it : they love each other, the emotions are intense... no need to ruin that by making us watch them feeling those for three to five minutes and bore us too death.

To be brief : quite good overall, in terms of story and acting, some problems wih the director's choices.
I probably won't rewatch it, not because I don't think it's bad, just because I won't feel the need. I will remember it as a good drama, and in the BL genra certainly as one of the best. You can say all you want about TharnType or Lovesick, which apparently are held to be la crème de la crème of BL by some, they're not that good and certainly not as much as UWMA. (Which says a lot about what standards scriptwriters and directors have to respect)