I was wondering the same. Perhaps, guwon is supposed to be symbolic of the boulder (probably not). He is the punishment the townsfolk are meant to endure for 'cheating death', he is a crushing force that takes residents at higher part of the mountain.
Why is the secretary not telling the ML that he slept with the MC? The secretary picked up the alpha from the MC’s house and probably knows what happened between them.
I want Eunho to learn about how Rakhyun has only ever had sex with hiim… eheheh it’ll be so fun! (≧∀≦)