You explore an unknown place but something catches your eye but when you get there as theres a human-sized chess board with each 32 chess pieces that are Grey and Black but while checking on the pieces, you see a slight silhouette sacrophagi of a girl sticking out of the rival grey king piece. It turns out to be a girl in black-hair got trapped and restrained inside of it but she doesn't say anything. Suddendly the grey pawn made its first move as the chess board is cursed and It probably wait for your turn to play on the other side of the chess with the black pieces.