Long, long ago, the rain stopped falling. "We must do something," one of the Dragons said to the other three, and then all four leapt from the sea into the sky. All at once, they let the water fall from their mouths and arms and legs, and even their tails. People were saved. That’s how the story of dragons in East Asia goes. The dragons have sweeping powers. They breathe clouds and control the waters of rivers, lakes, and seas. The Elder Dragon RDA, as a projection of the mighty dragons in the story, is competent to fulfill any tasks in breathing clouds and controlling your e-liquid for perfect flavor. It is designed by Wotofo and the Japanese YouTube reviewer阪上龍生, and is named Ryujin (the dragon god) for Japan Edition.