Main lead characters are secondary in the show

The first episode is not very intriguing but once you get past it, the shows gets interesting. Then again the show gets boring around episode 5. I know the story revolves around grim reapers dealing with suicide cases but watching different stories with the same plot gets dragging . We know someone will try to suicide and RM team will save them and same plot repeats in every episode. It gets boring and predictable . I feel like the main leads had barely any story. If you watch episode 2 and then skip it to episode 8, you’d barely miss anything. Because the main leads don’t have much of a story going on in present time. We do see their past in the last episodes but that was just too late.when the interesting part started, show ended. Yes, last 4 episodes were the most interesting out of all the show.
I watched the show for Lee soo hyuk and we barely see him in the 1st half of the show. Even rowoon barely seems to have his own story going on.
Apart from that some stories were way too intense.. Writer could've lighten up by adding some comforting episodes . But I get the message of the show that words and attitude can have a huge impact. It’s good for one time watch.