Ruby is chased by someone until she's hit by a dark blast, turning her into a card. As the card goes to the mysterious cloaked figure, Retsu intimidated him and wanted to know his identity. The mysterious figure takes off his clothing and reveals himself as a gray maine coon Jewelpet named Dian, one of the Four Heavenly Kings. Once they accepted the challenge, Dian used his Jewel Magic to create a stadium for their duel...