Apocalypse Descends: I Begin to Turn Dark!

[Apocalypse + Space + Self-Corruption + Shelter + Fortress + Underground Base + Wasteland]

As the world crumbles and the apocalypse descends, Jiang Shang begins to embrace his own darkness and return to his most primal nature.

Setting:

As the solar system orbited the center of the Milky Way, it entered a high-risk region near the galactic plane.

Cosmic disasters struck one after another: shock fronts, high-energy rays, clouds of dust, rogue asteroid belts, pulsar beams, anomalous gravitational tides, and more.

It began with global heat waves and torrential acid rain, followed by sudden freezes and asteroid impacts, then airborne dust and strange fog. In the end, the entire ecosystem collapsed.

To survive, humanity first endured an initial period of chaos, then:

In the early stages, it built temporary refugee camps and domed cities;

In the middle stages, it raised towering walls and fortifications, floating cities at sea, and mobile strongholds;

In the later stages, it retreated to underground cities, deep-sea bases, and even artificial ecological habitats.