Don't let the negative reviews let you write this series off before you try it for yourself. After I finished Star In My Mind I wasn't sure whether I was invested enough to continue, but I'm glad I did.
Let me start off by saying that this show knows how long it should be. Too many BL series feel like they're trying to reach a certain number of episodes when the story would've worked better if it knew its limits.
This drama is sweet, witty, well-acted and the chemistry is on point, like, really damn good. The production is much better than Star In My Mind, which had some weird editing choices and audio issues in the first episodes. SIMM was nice enough, but I couldn't really bring myself to care about the main relationship. Here, however, I bought it from the start and thought the development was nice and organic, the balance between the characters talking and letting things be left unsaid was really nice. It could've used a bit more nuance by the end, but their actions were logical, both of them were riddled with insecurities for different reasons and it affected them in different ways. The actors filled in the blanks with their facial expressions and body language.
Obviously, it has tropes, but that's kind of the point. Most BLs are supposed to romantic comedies and I'm starting to see people expect something beyond that. It's great that there are titles that expand the genre in different directions, but still, most BLs always were and always will be romcoms, full of tropes, and one can only hope that the tropes will be utilised in a way that feels fresh and exciting and that's how this series, for the most part, managed to be. The biggest strength of Star and Sky as a duology is the way the characters deal with misunderstandings, instead of the typical jumping to the worst conclusions imaginable and blowing everything out of proportions, they act in character and in a way humans would. One could say the bar is low and one would be correct, unfortunately things like this are still all too rare in BL.
I rooted for the characters, believed their development, could read their emotions from their eyes and laughed multiple times at the jokes. Recommed if you want something simple and nice.