Kiriya is the youngest villain in Dotsku-Zone, the realm of evil. He acts as a human to spy on the Pretty Cure, Honoka aka Cure White and Nagisa aka Cure Black, but accidentally makes friends. His necklace holds the citrine prism stone, which keeps him alive, but the Precure need it to save the world. But orders from the evil king Jyaku-King are to kill the Precure. His older sister Poisonny is a villain and she doesn't think he has what it takes to defeat the Precure.