Earth Collapse? Don't Be Afraid, I'll Take Over

[Single female protagonist] [Grown-up story] [Multiple perspectives] [Half apocalypse, half wasteland] [Multiple world fusion] With the consumption of the earth's core energy, the earth's ecology is deteriorating day by day, natural disasters continue, and it is moving towards a semi-wasteland era. Suddenly one day, nine cracks opened in the sky, and rich energy flowed out from the cracks, which relieved the ruined and turbulent earth. Under the wash of energy, the cracks became bigger and bigger, and there were more and more, until one day... Many dark creatures emerged from the cracks and slaughtered the earth wantonly. Other worlds were also connected to the earth due to some unknown force. A chaotic and cruel new era began. Is it the end of the world or a rebirth? Can they, coming from another world, make the right choice between the earth and their homeland? As leaders of the new era, can they complete their mission and return to their homeland? This is the story of a group of young girls who go to the earth to find hope, walk with the earth, and fight against the darkness in order to save their homeland.