You can really tell this drama is really good. Even the people who had criticisms towards the story which is valid and understandable still had positive things to say about this show speaks volumes. Hopefully, this opens up for more quality BL stories to be told with longer runtime and quality production (looking at you Heesu In Class 2)
Cha Woong Ki doesn't have much screentime. Her and the girl have basically the same screentime and the girl is only has a supporting role and isn't even added in the cast list yet in this site (hopefully someone can add her).
I SAW ALOT OF FUCKING SPOILERS ON TWITTER, (the episodes are already out in South Korea) and THOSE SPOILERS REALLY SOLIDIFIED THAT THIS IS ONE OF MY FAVORITE KOREAN BLs (alongside SE and TES)