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However, it was soon interrupted by the crumbling of the fight table as Kai lost his fight against Leon. Ren rides Conviction Dragon, Chromejailer Dragon on his turn during the tagfight. He declined it initially due to him being tired from the "sniffing" to track Leon's PSY Qualia but accepted it as he wonders how it is like to be up against an Aqua Force deck. He and Asaka were challenged by Sharlene and Jillian to a tagfight. After finding Leon, Ren lets Kai challenge Leon to a battle since he could not stop Kai when he's this furious. Ren uses his PSY Qualia to sense Leon's in order to find him. NAL4 gets seperated with the other teams by Leon Soryu not long after their arrival in the space.
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![cardfight vanguard asaka cardfight vanguard asaka](https://pbs.twimg.com/media/EYlhRtWXYAEBM-V.jpg)
After the winning ceremony, all the teams gather in a room that has a portal that creates a space connected between Cray and Earth to fight a mysterious empty power, Void. NAL4 wanders around the amusement park where the final stage is held. Ren and the rest of the winning teams gather in Japan, the last stage of the VF Circuit.
![cardfight vanguard asaka cardfight vanguard asaka](https://m.media-amazon.com/images/I/81z4B3Fj-8L._AC_SL1500_.jpg)
As he walks away he looks at Kai and states that next time they fight that he will win. After he loses the match to Aichi, he proceeds to allow Asaka back onto AL4 and states that Foo Fighter's battle isn't over yet. During Majesty Lord Blaster's attack, the unit proceeds to drain Psyqualia from Ren, effectively causing Ren to lose the power. Thanks to a Heal Trigger from Aichi, Ren is now forced to face Majesty Lord Blaster , whose skill brings together Blaster Blade and Blaster Dark , much to Ren's shock. After Kai brings Aichi back from PSY Qualia's control once again Ren proceeds to Crossride Phantom Blaster Overlord and use his skill to push Aichi into a corner, breaking his guard and proceeding to deal the finishing blow to Aichi. After Aichi calls Blaster Dark and succumbs to PSY Qualia, Ren is dealt similar blows of pain from Aichi's units that Ren had dealt to Aichi. He spends the majority of the match tempting Aichi to use PSY Qualia while making Aichi feel the pain from the attacks of his Shadow Paladin's. He then takes the field to battle Aichi Sendou in the last battle of the finals. Ren stands on the sidelines for the first two matches of the National Tournament finals where he sees a win from Tetsu Shinjou and a loss from Asaka Narumi who he then tells is no longer a member of AL4 since she lost her fight. Walking away from their clash satisfied, Ren declares that this is "The End" of their friendship, and all he needs now is the limitless power of PSY Qualia. Against Dragonic Overlord the End , a crossride of comparable power, Psy Qualia is the difference that confirms Ren's absolute belief in his powers. Ren demonstrates the card's strength, along with his PSY Qualia's final state, by crushing his old rival Kai Toshiki beneath his heels. Ren firmly sides with darkness without a moment's hesitation, and is gifted several copies of Phantom Blaster Overlord , the crossridden form of his preferred grade 3. Having previously warned him that it is time for "final judgment", Suiko offers Ren a choice of contracts a card of darkness or a card of light. "The evening preceding the match between AL4 and Q4, Ren is once more approached by Suiko of Ultra-Rare. While perturbed by Aichi's staunch refusal to use PSY Qualia against Team Caesar, Ren disregards Team Q4, stating that "the gate to hell is already open before all of you. Disregarding Aichi as a failed project, Ren returns to his original goals.