What exactly is Ousama Game in this titular series? How does it work? I read the manga recently because I was watching the anime and I am a little confused about the game and the virus.

So can anyone please explain the Ousama Game? Not the manga but the game in the manga.
The Wikipedia article on Konpa (which are basically alcohol-fueled "get to know each other" events) describes it. Basically, the rules are:


Everyone gets a piece of paper which either has a number on it, or identifies them as the king.
The King reveals themselves.
The King issues a decree/dare, including some of the numbers (for example "Number 2 has to kiss number 3's index finger").
The people whose numbers match the decree reveal themselves and do the dare.


It's a bit like a semi-anonymous version of Truth or Dare.