The story is mostly the same style as season 1, written by scriptwriter Song Jae-Jung.

- A fast paced story, without time-out.
- No unnecessary or filling scenes.
- Use of secondary scenes to clarify the plot, render the characters, with a rich content in itself.
- Frequent and surprising twists and turns, major plot-twists.
- Cliffhangers almost omnipresent.
- Unpredictable. 
- Depth on the psychological and existential levels.
- Many cult, emblematic, visually striking scenes.
- Chilling scenes that give you goose bumps.
- Comedy using situations rather than slapstick.
- Jubilant, two-way conversations, surrealist, due to the "mise en abîme".
- Strong and sincere emotions, as in all dramas. 
- Romance and poignant situations to break your heart.
- Emotional rollercoaster.
- Action, suspense and a dose of horror.
- A story that crosses the boundaries of Imagination.

Add to that, the specificities of season 2 are as follows...

- Respect of the manhwa rules from season 1, but I don't re-use all of them. 
- Coherent interpretation of the paranormal phenomena of season 1.
- More explanations, reinforcing the logic, make it easy to understand.
- A few reminders for people who haven't watched season 1.
- New rules and unknown phenomena from the W concept.
- Go further, to compensate that Season 1 already established the concept.
- Cohesion from beginning to end, like a gigantic puzzle.
- A tangle of situations and meanings overlapping over the entire plot.
- A few more comedy scenes during part 1.
- Several main characters, although there is a more important duo.
- A plot that goes crescendo from beginning to end. 
- More spectacular. (well, I don't have budget limits, but now CGI are great)
- Philosophical and psychological themes different from those of Season 1.
- Timeless universal archetypes, Korean equities (but I'm not korean, so I just try).
- Characters from W season 1, to avoid repeating the initial themes/riddles, and go further.
- Of course, some new characters too.
- Some quite harsh or disturbing situations, but without any mature content.
- An original and complete development of the W concept.
- A story that goes beyond Imagination. ^^