Forum:Xion-Aqua Connection

Hey everyone. This is my first post and I fully intend to help improve this wiki as well as I can so wish me luck. Anyway. I noticed when looking at Xion's and Aqua's pages and noticed that they share the same Japanese Seiyu (Megumi Tegouchi.) Now I do remember reading somewhere that Aqua and Xion share some sort of connection (along with Kairi and Namine.) Ans now they have the same VA? Coincidence? I think not. Any Ideas on what it could be?