Team Q4 gathers at Card Capital to watch the national tournament finals. Due to various delays, they only manage to catch the very last match, where Ren, leader of Team Asteroid, faces of against Koutei, leader of team Caesar. Even though Koutei appears to put up a good fight, Aichi sees right through Ren's power. Ren quickly decides to take the battle a little more seriously, and rides Blaster Dark, a black version of Blaster Blade. In a couple of turns, he completely annihilates Koutei, and Asteroid are crowned the national champions. In an attempt to cheer Q4 up, the manager arranges for a beach trip, but Aichi is too decimated for it. Miwa manages to convince Kai to speak to Aichi, which puts Aichi in a fighting mood once more. Fired up, Q4 requests a special training session from Shin.