English Dictionary

Mirrorverse

name

(fandom slang) The Mirror Universe of Star Trek, a dark parallel universe to the main setting of the franchise, in which humans are brutal, despotic conquerors.

Mirrorverse is a term used by Star Trek fans to refer to the Mirror Universe in the Star Trek franchise.

意味（1）

(fandom slang) The Mirror Universe of Star Trek, a dark parallel universe to the main setting of the franchise, in which humans are brutal, despotic conquerors.

I love the subtle beginning to the fic, so that you don't realize it's Mirrorverse until the start of the third paragraph, where everything goes a bit askew.