Tarot: Why are there only ten people?

There are only nine people in the Tarot Club. 10.

The protagonist is based on the name of the tarot card "created" by Russell the Great. Each member chooses a code name, and members are called by the code name. Members can exchange metaphysical knowledge through this secret gathering, and they can also trade various items through the courier "fool". Until the end of the novel, the Tarot Club has only 9 accounts of 10. Besides the protagonist "Fool" and his doll "The World", there are Audrey Hall's Justice, Alger Wilson's Upside Down, Derek Berg's Sun, Voss Wall's Magician, emlyn White's Moon, Caitlin's Hermit and Leonard's Star.