it's not a monster or zombie drama, story was based on cursed statue that control human's regret and make him a monster through their bad past. it's understandable why they didn't become zombie (it's a curse not virus) lol(≧▽≦) although cursed spread from black rain and statue's eyes.

acting..
for me that was good acting, not for everyone.
but there are some problems what they need to show more clearly.

joke aside story was good.
I didn't watch any drama like this
no kdrama vibes (ʘ‿ʘ) like fluff and slow burn romance. nothing like this. and it's was so new for me.. superb
you wanna watch watch it ? then watch it. drama is not even that long. it's obvious you are here so you like 'curse' and 'monster' tags