Hull and Taiga are fascinated by XB and decide to join Minato Tribe. The two learn the rules of XB from the deputy leader Saori Arisugawa, but Taiga, who is not good at studying, is not good at it. Kamiya, who was watching the situation, proposes a practice game, saying, “It is faster to actually play.”Meanwhile, at that time, King Neo Tokyo’s Ho-Oh Tenshin had given a certain order to Chiyoda Tribe, led by his successor, Ho-Oh Jiro.