Set in a world where a mysterious pandemic has left the male population impotent.
While not an official part of the title, "ciww" is frequently seen in Southeast Asian (particularly Indonesian) fan circles. It is often used as: Slang for "Cewek": modaete adam kun ciww
It's possible there may be a typo or misspelling. Could you please double-check the spelling or provide additional context? For example: Set in a world where a mysterious pandemic