RE: Diamond Weapon; I'm not sure at this point if Kidd/Seph are 'solid' enough for that to have been disclosed or if she even knows of the weapon correlation with regards to his world/this world as that might be a way in. I'll ask Matt a bit see if it could be worked. Probably not but never hurts to ask.

I'm not even sure what Ellie's current opinion of Sephiroth is, tbf? Last they talked was at the the Sage's Temple in Mysidia when he was going on about games and how they were being played iirc?...

As for Aerilon, haha Seph's never been there so couldn't really have a way in there either.

Sorry...this isn't going too well...