Rai is an adventurous and reckless boy who wants to explore the world. He is a delinquent school boy who ditches school for long rides on his bicycle. Donning his goggles, scarf, and jacket, he dreams of one day becoming a great hero. He is in the hunt for the Waku Waku balls for the thrill and his only wish is to continue to his journey. His official nickname is "The Sneaky Blitz Boy" and he represents the red Waku Waku ball, making his power gemstone a ruby. The game suggests that he and Arina are a couple, much to the latter's denial.