This is an extremely slow manhwa. Additionally, the "side arcs" can get confusing, especially with the delay between releases (not a dig @ zero scans).
However, this is one of the better martial arts ones out there. The characters are strong and have personality. The story makes sense. The "side arcs" aren't really side arcs as they are the reason the main story is progressing. And the fight scenes are usually pretty great.
I adore this series and highly recommend you binge it.