The 31st Piece Overturns the Board summary:
Ever since he was young, Kang Seol had strange dreams every night. In his dreams, he was an adult wearing a mask and strange clothing in a peculiar world. "All right, it's time to roll the dice." The game in his dreams, The World of Eternity, in which he created and controlled character pieces on the table, was his refuge and his passion...maybe even his entire world. He enjoyed rolling the dice with the strangers in his dreams. He was happy... "How dare this insect not know its place and sneak into the heavens?"
...Until he became a piece on the tables himself.