Cardfight!! Vanguard (2011) : 1x44

After losing to Aichi, Kourin goes to Card Capital, asking for Kai. Since Miwa is the only person who knows where Kai is, he rides with Kourin to the Underground cardfight area. They find Kai, who is beating all the underground fighters to relieve his frustrations. Kourin soon challenges him to a fight, where Miwa and Jun get to sit in the middle of the action. While Kourin uses her Royal Paladin deck, Kai reveals his newly modified Kagero deck, which focuses on Amber Dragons. As each of them are dealing damage to each other, Kourin confronts Kai about how it's his fault that Aichi has fallen into the power of Psy Qualia, saying that Aichi only sought the power because he wanted to become stronger for Kai's approval. Kai agrees, and also claims that he had seen the corrupted effects of Psy Qualia before, not knowing how to prevent it from happening. He then tells Kourin that it may have been one simple thing: to exceed that power. Kourin then asks Kai if he can stop Aichi before he falls completely under the influence of Psy Qualia, to which Kai says that he can. After losing to Kai, Kourin gives him Aichi's Royal Paladin deck, and hopes that he can succeed where she had failed. Meanwhile, Aichi spends the entire night in his room, mentally preparing himself for the National Tournament. When arriving at the tournament, Aichi tells Kamui to relax as he is sure that they will win, revealing his newly acquired Shadow Paladin deck, much to the shock of his teammates.