Responses
The second half is more about exploring the relationship between the two. Personally, I enjoy the second part more because of the dynamic they share. It's not common to read about an actual romantic relationship where one is a psychopath. And the open ending is far more compelling than if it had ended right after they completed their revenge.
I kinda feel like the main story got finished half way through. And the second half of the manhwa is just a but too drawn out for me.