It a great series, wonder why still got negative views. From a fans of "The Walking Dead", I did read the reviewed before watch it, and it not let me down. Way to go K-drama and all the casts, crews. At first this so remind me of an anime "High School of the Dead". Plots and cause had characteristic from zombie movie "28 days later". Others immuned we might see beside Nam-Ra in up coming S2' prediction? (Woo-jin, maybe still alive and turn immune)(Cheong-sam and Gwi-nam should be regenerated after the bomb blast after months)(Teacher Sun-hwa, she got bitten, ran away and never saw her turn). what could cause the outbreak in S2? (Virus creator' teacher Byeong when he got bitten and walk out the PD station)(Eun-ji bite someone from the research lab in Seoul)