Don't just look at the title of the book, my dears!
[The end of the world + system + no heroine + the protagonist is decisive in killing + no intelligence]
When the end of the world comes, any choice will become a source of fatality. Do you want to survive in the so-called end of the world created by God, or do you want to resist...
"You want me again, right? I'll hang you first!"
"Let go, let go! Gaia! Kill the God! Save Min! Save Min!"
"Give me a good pregnancy! Hurry up!"
…
"... Beautiful! An orphan again! You've been waiting for it!"