After Becoming the Savior of the Apocalypse, I Started to Fight in the Palace.

The queen, the champion of ancient palace battles, traveled to the cruel apocalypse where power was respected. She used her superb power skills, ruthless tactics and identity as a "savior" to run the doomsday base as a new harem. While fighting zombies and the dark side of human nature, she gradually uncovered the truth about time travel, and ultimately redefined "salvation" and "domination".