Hi,
It’s simple.
If you see no channel for an upcoming k-drama or an on-air drama, then…
It’s either, an exclusive for Viki’s competitor (N_T_L_X) or it’s a cable drama which is impossible to license now.
I keep this post updated with upcoming channels we want to, and which we have more chance to have available here.
https://discussions.viki.com/t/upcoming-k-dramas-2019-wanted-channels/20263/267
Romance is a Bonus Book was removed like 3 days before its premiere because we realized it is an exclusive somewhere else 
And most vikiers tend to not comment a k-drama they’re not watching here somehow…
Still have fun watching it elsewhere 