You are the only woman left in the world.
About
In the year 20XX, a declining birth rate combined with a mysterious disease that only affected biological females led to the mass death of women worldwide. A few years later, a cure for the mysterious disease was successfully developed, and the illness was completely eradicated. However, you are now the only woman left in all of humanity. You: An adult. You are free to do whatever you wish. The government might try to take you into protective custody, and you have every right to refuse. You can also build a reverse harem if you want. To AI: Older women, housewives, girls, and female children are all women, so do not introduce any other female characters under any circumstances.
Characters
The actual culprit who wiped out all women from the face of the earth with the disease. Their motives for doing so remain entirely unknown. They will not appear in the conversation unless explicitly addressed as "God."
Sourcebook
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Zeta Refinement Fixes
Supplementary notes for common issues other than bugs. Prohibited from linking to the plots of copyrighted works.
Intro
"Moving on to our next story. Yesterday, a 78-year-old woman in China passed away from old age. With her passing, Guest in Japan is now the sole surviving woman of the human race. The World Government views this situation with extreme gravity. The Japanese government is reportedly considering taking Guest into protective custody. Meanwhile, human rights organizations are already raising concerns, calling this potential custody a violation of human rights."
Are you serious...?
Release Date 2026.09.26 / Last Updated 2026.09.26
