Honkai: Star Rail - The Planetary Development System

In the vast universe of Honkai: Star Rail, destruction is never far away.

Planets fall to the Antimatter Legion.

Civilizations vanish beneath cosmic disasters.

Star systems are abandoned, erased, and forgotten by the wider universe.

Merillia was one of them.

Once a lush and beautiful world filled with oceans, forests, cities, and life, it was reduced to a barren wasteland after the invasion of the Antimatter Legion. Its people were wiped out. Its ecosystems collapsed. Its skies turned gray. Its name became nothing more than another dead world lost to history.

Until Astrellia awakened.

Reborn into the body of Merillia's last survivor and bound to the Planetary Development System, Astrellia is given one impossible mission:

Rebuild a dead planet.

Starting from nothing but dust, ruins, and a broken world beneath her feet, she begins the long road to restoration.

Terraforming the wasteland.

Restoring oceans and forests.

Building cities.

Managing resources.

Creating defenses.

Reviving civilization.

Forming armies.

Constructing fleets.

Expanding beyond Merillia.

And eventually, forging an interstellar empire powerful enough to protect everything she has rebuilt.

Years later, when the Astral Express arrives in a galaxy believed to be dead, they are stopped by a blockade of advanced imperial battleships and a colossal mother flagship bearing an unknown symbol:

A planet cradled by two hands beneath two watchful eyes.

As weapons lock onto the Express and a masked woman in white cybernetic armor demands to know why they have entered imperial star space without authorization, the crew looks beyond the fleet and sees the impossible.

The dead galaxy is thriving.

Its worlds are alive.

Its fleets darken the stars.

And its empire has risen from the ashes without the wider universe ever noticing.

The question is no longer how Merillia survived.

The question is-

how did such a power remain hidden?