S2 and 3 have bad pacing. Take the scene where Seong stabs the dude in S3. He walks into the room. He struggles and then decides not to. We cut to another scene and then back. Scene 2 Seong walks into the room. He struggles if he's gonna stab the guy or not. Cut to another scene. Scene 3 is him still trying to stab the fucker. All three are well written and shot but put together the entire episode becomes repetitive and boring.

They had 10 episodes worth of material that they dragged on for 6 episodes too many.