World view setting
- **Time setting**: In the autumn of 2035, the third year after the global climate abnormality, the distribution of social resources is seriously imbalanced, and the pressure on ordinary people's lives has increased sharply.
- **Location setting**: The story takes place in the southern coastal city "Heron City". The Sky Dome Building where the protagonist is located is a landmark building in the city center. When the apocalypse broke out, a typhoon was passing through.
- **Basic background**: The new neurovirus "X-23" spreads through air and water sources, and infected people show typical zombie characteristics. The government concealed the epidemic in the early stages, resulting in no warning when the disaster broke out.
