Well this series lacks so many things I don't know from where to start. Almost every other thing is wrong about Black Summer.
1) The Korean Girl (Sun). She is speaking in Korean all the time. No problem atleast give some subtitles so we could understand what is she saying. They just put (Speaking Korean) everytime she speaks.
2) The zombies doesn't seem like they're zombies. They Run like humans. They lack acting the part of actual zombie.
3) No story behind the characters. No idea where they come from. What are they upto. Series lacks direction. And the overall some well written scripts. At some point u are like I'm expecting the characters to say something they are just silent as a whisper.
4) Background voices and sounds are so deaf that u can't even hear them sometimes words spoken by a person you can't hear it actually.
These little things are so annoying that u end up hating the show.