Twenty-three years after the original Future Card Buddyfight, the sixth season turns to Yuga Mikado, the son of Gao Mikado. Yuga comes across Buddyfight for the first time, a card game in which monsters battle beside humans as their buddies. Once he starts playing, his instincts awaken and he grows into a skilled fighter in very little time. The attention he draws brings fresh rivals and new friends, along with challenges of its own, and his sudden fame and enjoyment carry a price.