The 31st Piece Overturns the Board

As a child, I fell into a strange dimension in a dream. In my dream, I was an adult, dressed in clothes I'd never seen before and wearing a 'mask'. 'Now, it's time to roll the dice.' And so the dream game that began with the roll of the dice, the 'World of Eternity', became my destiny and my life, perhaps even my world itself. As I rolled the dice with mysterious, nameless people, I was happy and joyous. Until I became a piece on the board myself.