Kaio Koryu is Dante Koryu's father and Rogia Koryu's husband, forming Dante's immediate family unit. He travels extensively with Rogia, undertaking expeditions to destinations like the Antarctic. During a phone call with Dante, Kaio enthusiastically recounted his adventures and championed travel as a profoundly rewarding experience. He initially mistook Dante's exclamation of "this is awesome" as excitement for these travels but discovered Dante was instead praising his Beyblade, Ace Dragon—a revelation that visibly disappointed Kaio. Later, Kaio demonstrated support for Dante's Beyblade pursuits by remotely watching his son's match against Gwyn Reynolds via tablet. He expressed admiration for the battle, calling it a truly incredible competition. This engagement highlights his awareness of Dante's Blading career despite their physical separation during his journeys. Kaio's documented interactions portray a father sharing his passions while gradually acknowledging and supporting his son's path.