Blaster of Darkness - S1.E33

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 Foo Fighter AL4, faces of against Kenji, leader of Team Caesar. Even though Kenji 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 Kenji, and AL4 are crowned the national champions. In an attempt to cheer Q4 up, Shin arranges for a beach trip, but Aichi is too demotivated for it. Miwa manages to convince Kai to speak to Aichi. Kai's words give Aichi the motivation to continue playing. Fired up, Q4 requests a special training session from Shin.