Heart Piece

Heart Pieces are proof of participation for the World Duel Carnival. Each Duelist receives one Heart Piece and a heart-shaped framework to hold them. In order to complete a full heart and advance in the tournament, the Duelist has to collect four more pieces.

Trivia

 * The fact that Heart Pieces are needed to form a whole Heart is similar to how you can increase your total health in The Legend of Zelda games. In them, finding certain number of Heart Pieces (four in every game that has them except Twilight Princess with finding five), they "form" one Heart Container and thus another unit of health.