Fans appreciate the series for its high-quality art and its blend of ecchi and romantic comedy elements within a high-stakes setting. It is often compared to other "solo-ability" zombie stories, but stands out due to the specific mechanic of being the world's only hope for a cure.
: The zombie evolution becomes more apparent, suggesting that the "vaccine" might be the only thing keeping the survivors from facing a total wipeout. Where to Read and Community Insight