As someone who has read the webtoon I can watch the trailer and know what is going on, but I would love to know…
The trailer comes across as random scenes strung together, but I don't know how they can cut together a more cohesive version as it is essentially multiple stories that you have to try fit into a 1:30 trailer and make sense. The good thing is that the tone and vibe is there.
Ah, the poster shattered a big red herring and showed some plot twists already, okay
To be fair, a lot of things won't be picked up on unless you have read the webtoon or were spoiled a head of time. More than 90% of the people watching this won't know anything before hand even if it seems obvious to you and basically give things away.
No bro Lee joo bin will romance with lee dong wook, and lee da hee will romance with lee Kwong.
Also fans of runningman have wanted Kwang Soo and Da Hee in a drama for a long time look at this scene with them https://www.youtube.com/watch?v=XwVIzsRDPvQ and they have many more over the years together.
https://www.youtube.com/watch?v=myr6qGYRHM4