Cardfight!! Vanguard - 8x12 - Season 8, Episode 12- Followmy.tv

Chrono's team, Striders, enters a U20-qualifying tournament held at the first Card Capital shop; this is their last chance to qualify for the U20. However, because Kazuma has not shown up yet, Chrono and Taiyou must fight their way through the tournament by themselves. Striders eventually make it to the grand finals, where they face Team Trinity Dragon. In the first game, Taiyou loses to Karl. Then, Misaki tells Chrono that if Kazuma does not appear within ten minutes, then Striders will lose by default. Thankfully, Kazuma appears at the last possible second and fights Kei in the second game.