I think the title sums up my feelings pretty well. It felt like it could be twice as long because of how many interesting things there were, but they were never really explored.
The last episode seemed pretty rushed, but even then, it was pretty nice series.


Spoiler ahead ( though kinda minor and it was obvious it will happen )

The only thing that felt a bit awkward to me was the beginning, where the main guy with the mask ( sorry I can't remember names) was acting a bit stiff and then the "kiss" at the end, if you could even count it as that, but, truth be told, I noticed that most of the Korean dramas have pretty...weird kissing scenes. It's like the put their mouths on each other and freeze, it's kinda hilarious, but in the kiss scene in this series, the mains looked kinda uncomfortable.

But overall, the chemistry was really nice, the episodes really, really interesting (I really wish they would explain more about all the cool stuff!) the music was...well decent for me, but I'm really hard to please with soundtracks and songs so take this with a bigger grain of salt that the rest :)

Overall, definitely watch, it can make you feel things and has many interesting concepts and the chemistry is kinda cool.