They never actually said "zombies" even in the plot. It was always a strange new virus and the main characters who struggle to keep their loved ones safe. Also coming to your question about the title, um there's a lot of really good stuff on Twitter so I'm sure you'll find what you're looking for if you browse through a bit.
How scary is it? I'm hyped to watch it but I'm a pussy that gets scared very easily :(
I'm like that too, and I've become more easily scared these days. However, I was able to get through it and this also became one of my favourites. I'll say, give it a try and if it's too scary, don't continue it or just skip the parts you find scary :)
this was such an amazing drama, i just cried that it was over and i wanna rewatch it all again. does anyone know any other dramas where there's a similar love story to theirs? it'll never be as perfect as this for me but im willing to try :(
I can't believe this ended! Time flew by so fast ㅠㅠ this is now my most favourite drama of all time! I feel weird inside, I've got nothing to look forward to on Fridays anymore 😭 I wanna watch it all again for the first time :(
K-Drama 
this is now my most favourite drama of all time! I feel weird inside, I've got nothing to look forward to on Fridays anymore 😭 I wanna watch it all again for the first time :(