It is best zombie series I have seen in my opinion.we can see different types of characters and friendship which we can relate in our lives like how selfish people are ,how we help each other in critical situation etc. That scientist invented bcz of bullying only but main bully is only not effected and he became reason for main character death.since the bully is half zombie i hope cheongsan will be alive like namra ,Its really hurt how the main saviours died.anyway we should learn that we should not give up and be confident. waiting for season 2..