I'll try to keep it short. The drama tries its best to tackle grief and show how different individuals overcome and experience hardship. The problem is that it simply isn't realistic. The coping doesn't involve professional help, but rather toxic traits that include pill-popping, destroying lives around you to feel better, and being stuck in a time loop of self-destruction. Now, many of these things can be real for us, but the show does little to really address problems head-on. People don't give full answers, there is little context to justify the pain sometimes and the approaches to cope are never healthy.

The first 6 episodes are actually very well done. There is little drama, the cringing is kept to a minimum, and every character shows promise. Then, with little context or reasoning, it just goes bonkers and many characters attempt to destroy their own lives. In one episode, the male lead experiences ghosts of the dead and voices in his head. This isn't grieving, it's a mental disorder and borderline schizophrenic. The crazy part is that this is never addressed again in any other episode, nor do we see those ghosts again. If you're having trouble understanding me writing that, imagine watching the show.

Overall, your time would be much better spent watching virtually any other drama.