This season of D.P. felt like a completely different show from the first season. Suddenly, we have a Big Bad and a looming conspiracy that the good guys are dealing with. Suddenly, Junho feels like a different person and is apparently Jason Bourne in the last two episodes. I still loved Junho (and the rest of the gang), but he just felt different in this season. It was like he had a ton of development that the audience didn't get to see and was more confidant than the last time we'd seen him. Though, I should mention I have only seen the first season once and it was when it first came out, so I might be forgetting things.
This season also seemed less grounded in reality than the first season, which felt gritty and very real and knew exactly what kind of story it wanted to tell. This season seemed a little more out there in terms of reality and like I said the whole train/Jason Bourne thing was kinda wild.
All of that to say: I still watched the whole thing and was interested to see how it would all turn out. Plus it was nice to see all of the characters back on my screen (all of the actors were fantastic). I just think this season was a little lazy and not quite up to par with the first season.