I don't have volumes 1 or 3 of this series but it doesn't seem to matter. This Korean manhwa is mostly art with little story. There was a blurb at the start to describe what happened in volume 1; that was enough.
This was composed by someone who seems to have a bone to pick with Christianity. Being Christian, that doesn't help my enjoyment. Koreans have probably suffered more at the hands of Christians than Christians at the hands of Koreans, and so it goes.
The art is okay; the story is clear. It's just not to my taste.