Responses
The covers follow the physical manhwa (which I buy) and each book covers around 30 chapters. So my guess is that each cover corresponds to the previous season. The next person on the cover could probably be Ru-da (plays a big role in finding who’s behind it and evidence), Ju-in (his big personality reveal or his backstory that’s gonna come up), Ji-ho (You will find soon if you read the raws) or maybe even Yuri since she does leave an impact.

You’re telling me Chunyoung is the only one in the new cover besides Dan-I and he isn’t the ML??¿ logic is left the chat