To me, it looks like The Castle of Dreams, but I'm pretty sure it is supposed to be Radiant Garden/Hollow Bastion. Would be interesting if it was Ven's memory.
Interesting maybe, but to 99,99% unlikely because at times of KH 1 the continuation of the story wasn't planned out.
Also, there have been given several
in-universe explanations why Kairi's heart remembering is not only more fitting/reasonable but also why it being Ven's is closely to impossible.
Nomura retcons things all the time. Really, he could easily switch it to that. For example: Xigbar: "Ha! He used to give me that same look!"
Roxas, right? He's Sora's Nobody, and spent a great deal of time with Xigbar in the Organization. Everyone seems to be calling towards Roxas in Sora and "confusing" the two of them. There's no doubt.
Nomura: "Nope! Now it's Ven he was talking about. I put a scene in BBS just for that!"
Somehow I was just waiting for some of the retcon-whiners to come around again...in a story that it still running it is normal that new facts get included and give older scenes an other meaning sometimes.
Unlike KH 1 though, by the time of KH 2 Nomura
had already planned out the continuation of the story so it is entirely possible that this sentence from Xigbar was meant to reference Ventus all along, just like when he called Sora a "dud" with the keyblade in comparison to the others (TAV) later in the Castle that never was.
In Days Xigbar even amusingly slightly "compares" Roxas and Ven when going on a mission with him.
That said, was it really spoken out or confirmed at one point that Xigbar was referring to Roxas when confronting Sora in KH 2 at Hollow Bastion?
Or is that just a widely accepted assumption made up by the fanbase much like the yellow eyes = darkness thing?
Funny thing is...I can't even remember if Roxas ever even
gave Xigbar the "shut up"-angry look Ventus and Sora use himself.
Honestly, I think it's just some random picture of some random castle. It wouldn't even make sense for there to be a picture from RG just lying around Deep Jungle. I think Kairi's deep unsurfaced memories just reacted with the image of a castle, making Sora think it was familiar.
Or it could very easily be as other people have said and it's supposed to be the castle from RG but the final design was eventually changed in BBS. Whatever. In any case, the purpose of this scene is just to hint at Kairi's heart being inside Sora. I don't think we really need to dwell on it all that much. It's most likely never going to come up again.
That's actually true, lol, it's not like Ansem scattered dias of his castle all over other worlds...*ggg*.
The explanation with Kairi is surely the correct one considering everything surrounding it...the
only way I could see Nomura changing that is when he would use the fact that Ven's heart is connected to Sora's more closely than any other, but why would he do that?
Exactly, that's the purpose of that scene and I also strongly doubt it will play much more of a role in the long term.