Aichi being jerk from Psyqualia was due to Kai being his role modelPsyqualia doesn't really turn everyone into a jerk like Ren, but exacerbates internalized feelings. Aichi acted the way he believes Kai acts, such as calling his teammates weak, and other acts of rudeness not too far off from Kai's actions in previous episodes. Made all the more obvious when Aichi invoked Kai's "Final Turn" flair. It just snowballs into a sense of cockyness that has taken on a life of its own.
Cray is real and PSY Qualia allows its users to connect to itThere have been a few hints so far as to this. Firstly, the marketing fluff for the Vanguard Gloves states that the crystals on them were 'mined from the Planet Cray'. Secondly, whenever Aichi uses PSY Qualia, he seems to actually spiritually appear on Cray, more than 'image it', he actually seems to astral project himself onto Cray. And thirdly, Kai's line from Episode 40: 'you're the one who's doing the fighting'. The implication being that PSY Qualia actually allows something else to fight the game for you, like your Vanguard.
After the tournament is over, Morikawa will "power up" the structure deck Shin gave him by adding a bunch of Grade 3 units... and in so doing bring his winning streak to a crashing halt
Gold Rutile is Morikawa's AvatarThis theory assumes that most, if not all Vanguard players have one particular card/unit they resonate particularly well with, this being their 'Avatar' [as opposed to it simply being a term Aichi likes using]. Using one's Avatar improves the connection to Cray, even for a non-Psyqualia user, and thus improves your game. Morikawa's horrible record at Vanguard is because not only has he not found his Avatar, but he's too thickheaded to recognise it when he does find it. Gold Rutile helps him out as much as it can when he first uses the deck, but there's only so much it can do.
Aichi let Morikawa beat him in Episode 51.The anime was careful not to show his hand and with his deck, it's unlikely that neither of the two cards remaining in it could block. In addition, he still had another Galatin to intercept, so even the weakest shield possible (5000) would have been sufficient. Combine that with the episode's lesson being that winning wasn't all that mattered, his shy smile and Morikawa's obvious joy at winning for once, it's likely that Aichi decided to let him enjoy it.
Aichi will integrate this card into his deck at some point.Almost seems like a no-brainer; I mean, just look at its abilities. It's like the card was created specifically for the plot...Or maybe the plot for the card...Not to mention the plot seems to be having Aichi hold onto the Shadow Paladins as of episode 53. Considering it was announced just as the anime is heading into its climax arc...The timing is just too good. Plus, it would just be really cool.
Due to unexpected circumstances, Ren will fight Aichi instead of KaiAichi will use his PSY Qualia to cancel out Ren's and after he wins, Kai will acknowledge that Aichi has become stronger, leading into their long-awaited rematch which will finish out the series.
Ren will somehow incapacitate Kai after the upcoming fight Kai's bound to loseHe's bound to lose the fight anyhow, to add extra weight to the fight between Ren and Aichi. It would get Ren evil-points and Aichi would have even more of a drive to win the nationals. Furthermore, the episode previews mentioned how psyqualia 'locks people into an image of solitude'(very paraphrased), so my guess is that Kai is going to experience a more permanent version of the image psyqualia users show their opponents after they win a battle.
Ren and Kai will become so engrossed in the fight that PSY Qualia will cause a catastrophe and force a DrawThe fight is already played up as spectacular with a ring of fire encircling the field, and Ren used PSY Qualia to create a mass vision before they even began. It's not unlikely that as the fight continues Ren will become furious and ramp it up. Aichi's presence may begin to affect it as well, seeing as Ren was able to influence Aichi's before he had even discovered it. It seems that a twist like this would be a good way to lauch a second season and manage to keep both undefeated characters undefeated.
Aichi will be overtaken by PSY Qualia again.Not necessarily during his eventual fight with Ren, but maybe some point in the second season. Aichi was only under its control for a (surprisingly) short time. After all, he still has the Shadow Palladin Deck. Who's to say he won't be tempted by the power again?
The reason for Aichi's switch in Asia Circuit is because his old cards have too much emotional weight attached to them.There's too much at stake with these decks—many of the cards are extremely important to somebody, and with all that pretense attached to them, Aichi would have no more room to grow because he wouldn't feel free to edit his deck or change tactics. Blaster Blade is attached to Kai and is his first card, Blaster Dark is attached to Ren and PSY Qualia, Majesty will bring up unpleasant memories of season 1's final battle, and Alfred is attached to Suiko and his involvement with Ultra-Rare. By putting away his old decks and using the Gold Paladins instead, Aichi can get a fresh start and be free of being tied up by the past, which gives him more room to grow as a fighter.
Ren is unaffected by the memory change caused by Takuto.The idea that Aichi is able to remember his previous deck while no one else does (outside of the brief flash Kai experienced), is because Aichi was a user of Psyqualia. Thus, Ren, who also used one of the Clans that were sealed and was also a Psyqualia user, can remember what things were like before. Also, like how Aichi is experiencing confusion from everyone believing that he's always used Gold Paladins, Ren has experienced this, but was able to adjust, thus being as skilled with the Gold Paladins as Kai is with Narukami, but able to recall the same things as Aichi.
Takuto has some connection to Incadecescent Lion, Blond Ezel.The green mark on his forehead is also on Ezel. Also, when Aichi first played Ezel and activated Limit Break, Takuto's face lit up. It's not much to go on, but there's next to nothing known of him at the moment.
Blond Ezel was Evil All AlongWhat appears to be a new form of Ezel is the cover card of Set 9. Said new form features darker shades of color overall, redesigned armor, and a colder, sadistic expression. Blond Ezel's lore is also very sketchy regarding his origins, or indeed anything beyond his role in Gold Paladins. Therefore, this new Ezel could be his true form, taken on when he reveals his true colors. Ezel could in fact be working for the Mysterious Force, and be the one who sealed away Royal Paladins, Shadow Paladins and Kagero, doing so as a pretext to form Golds for his own purposes.
Morikawa and Kamui are from Mishima clanLook at their hair. It resembles a young Heihachi and a Kazuya-wannabe, respectively.
Miyaji Academy will lose after half a season of remaining undefeated... by losing against Ren's shcool. Aichi will lose to Ren, Misaki will lose to Asaka, and certainly Naoki will provide the third loss in some way. This triggers two things. First, it annoys the Absurdly Powerful Student Council, who see their school as overly competitive, meaning they will decide to forcibly disband the Cardfight Club. However, other clubs to be screwed over by the student council will rally around the Cardfight club, directing the plot to screwed-over clubs vs. student council.
Nubatama getting support in Booster set 13 means that Mark Sensei/Ninja Master M is getting a serious fight sometime in season 3.He's the only major character in the entire series who uses the clan, after all. The support is simply there to pimp out his deck with new units for said fight. Note how the clan has almost entirely been abandoned by Bushi up until now, and has only reappeared after Mr Mark was brought back into the series.
The current/first 7 Reverse units correspond to the Seven Deadly Sins(This is a theory that someone on the Cardfight Wikia proposed, and it's currently holding water) The lores of the four Reverse units currently shown can each correspond to one of the sins so far.
Cray is the equivalent of Earth in a dimension parallel to EarthThis theory is likely due to the only connection between cray and earth is some sort of portal.
Unreversing Takuto will cut off Void from Earth, sapping their power.Because there are only a few episodes left this season, and not enough time to unreverse everyone. However, we might have time for the five most important reversed character.
Aichi and Kai have one more match on the way to Unreversing Takuto.Because we all know that Aichi's gonna do everything in his power and save Kai. Consequently, whether Aichi wins or not, he succumbs to Reverse.
That silhouette we saw in Season 4 that we think is Aichi is not Aichi at all. The real Aichi became a Vanguard card in Season 4.This card kinda confirms it all.