The End of the World Is Coming? Sorry, I Can Reconstruct the Material

[No system + single female protagonist + decisive killing + growth type + novel setting] A sudden wave of light, followed by the shadow of a major mutation, enveloped the world. Struggling to survive, fighting for supplies, people eating people... It seems that what is affected is not only the horrific changes in appearance, but also the people's hearts. Tyranny, hypocrisy, God's choice, God's abandonment... You said you can control fire? The golden body is immortal? Sorry, I can materially reconstruct!