During a dangerous expedition , he encountered a being from the Astral World and was given the Golden Key , which he later gave to Yuma to give him courage .
Yuma and Kari 's father , who is the original owner of Yuma 's deck .
During a dangerous expedition , Kari encountered a being from the Astral World and was given the Golden Key , which Kari later gave to Yuma to give Kari courage .
Yuma and Kari 's father , who is the original owner of Yuma 's deck .