Me too! I stan Hyun and Ga On already. It's been a while since I last read the manhwa so I can't remember the details. Ga On kinda reminds me of Kim Byung Yeon from Love in the Moonlight...
its possible to watch without the prequel, just that you will be missing some details and more in depth logics…
Well technically the prequel's "ending" is not the actual ending because the story carries through to the sequel where they "reincarnate" and meet each other again. So you can think of it as a tribulation that they have to go through to be together. It makes the watching experience way more satisfying...
It's not officially released yet but I'm dying to listen to the full song as well. It sounds so sweet though...
I'm still waiting for the unreleased OST that's been floating around...
https://www.youtube.com/watch?v=NkdoXBT7fa8
https://www.youtube.com/watch?v=DIghhFgapzw
https://www.youtube.com/watch?v=DxuNE_kAhDs
https://www.youtube.com/watch?v=6u102s-Ml9g