These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Caladbolg is absolutely terrifying. The innocent expressions of an eight year old child mixed with his wide capability of destruction seem to drown whatever tone the atmosphere originally possessed into absolute bleakness. Unlike other examples of Creepy Child, Jae Hoon is not possessed by an evil spirit or demon, he possessed by a god.
The aftereffects of a member of the Night Clan, in this case Jae Hoon himself, just touching a living organism from Chaos... NOT PRETTY.
Trolling Creator: A lot of chain yanking, considering the series did essentially 360 from where it had stood at the end of Immortal Regis. The author likes to drop hints and clues in every which direction, but never giving a clear answer; this is partially why the manhwa is so confusing for the first 20 or so chapters.
Yank the Dog's Chain: So far the the Dragon Festival Side story is looking like it with the story ends with Yuan getting her desire of dancing with Xix fulfilled and the two of them seeing a Dragon spirit that is supposed to grant the wish she made, which was for happiness for everyone. A pretty happy ending... until it is revealed that the last couple to see a dragon and dance was Nex and Serin.