Dark, Psychological and touching at times. I wish we had more happy episodes, but someone got infected, or died or something like that in every episode and each episode was stressful. But, nonetheless, a good and unique drama.

One thing that might have made the drama even better are romantic melodies. There were so many heart-warming moments between the main leads, between families and even between strangers. If only they were accompanied by fitting music, they would have had way more impact.
There were a few creepy, dark BGM songs, a few which were good, played seldom anyway.

A few of the inconsistencies I noticed are:
1. Why didn't they prepare animal for the infected to attack? Would they not have been interested in animal blood because they can't pass the virus on to them?
2. How come their doors worked when they didn't lock it & no electricity?
3. Why didn't the health service under Han Tae Seok use shielded/anti-missile cars to travel to Yoon Sae-Bom's area? I think they would have been safe against zombies and could have easily retrieved her/protected her since she was so important.
4. Did Andrew like the boyish girl? Why did he give her food? Why did he give the cleaning lady he later killed an apple? IF he's a serial killer, than what was the point of those acts?
5. Maybe the biggest inconsistency is that no character mentioned even the word "zombie", but only used the terms "infected", "sick" or "mad person disease". Let's be honest, people would definitely associate them to zombies in real life.