One guy is a legit pyschopath and the author has no intention of hiding that, and on the other hand we have a major pushover. Something about the plot seems like it won't end as a love story even though it's appears to be heading in that direction. I wouldn't be surprised if Inseob ends up chained in that guy's basement. However I would be shocked if they somehow end up as a couple. I can't picture a satisfying redemption arc for Wooyeon.
Their actions and thoughts are kind of irrational.
I can only describe it as off or strange.
We’re only 4 chapters in so maybe there is even more to the story.