Sound is taboo, words are destruction.
In 2121 AD, the advent of the "plague" caused humans to lose the right to speak. Anyone who tried to speak would explode and die instantly.
Only by using the technological mask "Venus" to convert thoughts can people survive and "speak".
It's a dark fantasy about what "free speech" actually means.
"If your voice is destined to bring destruction, do you still dare to speak?"