I was wondering, when aqua was locking the Lod and turning it in Co,Master E is saying none but her is able solve the puzzle(or something like that)is it possible that only keyblade masters are able to solve it or is the one who locks it away,i only posedt this because if sora and riku became keyblade masters would they be able to go into Co without losing all memorys?

I think Eraqus probably told Aqua to reconstruct it in a such a complicated way, so that only Aqua could find Ven, in a future game. And I think Namine was the one manipulating Sora's memories in KH:COM, so it might be just an endless maze. But I don't think that Sora or Riku could find Ven. I personally think that Vanitas' Lingering Spirit is roaming Castle Oblivion as we speak, waiting for Aqua to find Ven.

I thought of it less as a maze that Ven is hid in the center of, and more like a door that is locked and hidden so that none can see or open except Aqua.

I think Sora's connection with Ven might lead Sora to Ven, but I don't think Sora could unlock the door.

I was wondering, when aqua was locking the Lod and turning it in Co,Master E is saying none but her is able solve the puzzle(or something like that)is it possible that only keyblade masters are able to solve it or is the one who locks it away,i only posedt this because if sora and riku became keyblade masters would they be able to go into Co without losing all memorys?

 

Only the person who created C.O. is able to know each corner of the Castle. Since Aqua was the creator of C.O. that means she knows every nook and cranny of the place. And Sora and Riku wouldn't really lose their memories if they entered C.O. again. They would still have their memories.

tutti frutti. I pretty much thought the same thing as the others. Seeing as Aqua changes the LoD to CO, that she would know the eniter layout from top to bottom. I kind of thought that, possible not 100% sure, that Yen Sid may have revealed to Aqua about Vanitas and Ven, one possible reason to leave him in CO other than his coma state.

tutti frutti. I pretty much thought the same thing as the others. Seeing as Aqua changes the LoD to CO, that she would know the eniter layout from top to bottom. I kind of thought that, possible not 100% sure, that Yen Sid may have revealed to Aqua about Vanitas and Ven, one possible reason to leave him in CO other than his coma state.

 

Yen Sid was unnaware about Ven and Vanitas.

What KH125 said.

Castle Oblivion doesn't cause memory loss. Namine was the reason that Sora and everyone were losing their memories. Of course Marluxia couldn't tell Sora this, or he would know that Namine wasn't truely his love and that she had just messed up with his memories.

master eraqus said that anyone who enter co would lose his memories but namine is the one who is playing with people memories so was namine planed to be in co why was she there in the first place