I am mostly staying for Captain Jo Young, Jo Eun Sub, detective Shin Jae, the bromance and all the future funny scene when for example Jo Young and Eun Sub will meet each other >_< ! I love when an actor plays severals personnalities like in Kill me/heal me and Duel.
But yeah the story is very messy and I wasn't surprised after all to see it was made by the same screenwriter as Goblin and Mr.Sunshine. There is always something stiff / not believable but at the same time I feel like there are interesting ideas and big work behind it. + The bromance is a always nice to see. I feel like it is just missing a bit of organization, as if the screenwriter want us to see all the events in one go: we have no time to really feel connected to the main characters (frankly I am more interested by the others characters and it was the same in Ghoblin because I was liking the nephew -here it seem Eun Sub as the same kind of personallity/role-) nor the time to really get the story ( I personnaly rewatched a lot of scene to understand better).
I think the show isn't slow it is just there are too much things happening but without knowing exactly if it is big or not, what is going on ect...
Now I am just curious about who was the person who saved Yi Gon, I have a feeling it is Detective Gang Shin Jae. It is sure it is not Tael eul because I don't understand why she wasn't wearing her badge properly , it was in a pocket. So I wonder what is the link between the king and Shin Jae ? Is there also another Shin Jae in Yi Gon's world ? who is perhaps working with Luna. Is he his brother or something or perhaps his other self with his face changed by the evil uncle ? I really want to know. But It is the only thing I want to know for now :/