A/N: This one's a little longer. But it's Roxas so I s'pose that's understandable XD. The little guy's just too interesting.
Roxas; the Thirteenth, the catalyst of Xemnas' plans. The catatonic Keybearer was what the Superior had been waiting for, and he wasn't disappointed. With only minimal training, the boy had already released hundreds of hearts for Kingdom Hearts, exterminating the Heartless with all the efficiency of a boy wanting to belong to something.
A rather... human sentiment, to say the least.
Which led Xemnas to Thirteen's 'friendship' with Eight. He had flummoxed Saix when he chose Axel to be the Keybearer's primary mentor, with his second-in-dommand spouting doubts and complaints about Eight's 'lax work ethis' and 'bad influence'.
But Xemnas had known what he was doing, and he now had a very interesting test subject. He'd suspected that still possessing an Other might have an effect on Roxas' humanity; that it might have made the Nobody 'special', and his suspicions were slowly being supported by his observation of the two Nobodies' correspondence.
The way the two carried out their sentimental clocktower routine every day; the way Roxas sought Axel out in the mornings; even the way Number Thirteen greeted other members and reacted to missions and training were all factors. Even the way, as Xemnas had noticed, he started when the Fourteenth 'member' was introduced - it was all pointing to a conclusion that Xemnas was both anticipating and apprehensive of.
Could Number Thirteen 'feel'?
It would warrant more research - Xemnas wasn't one to jump to conclusions, especially now - but if it was true, then Roxas could be the door to a whole new world of plans and possibilities for the Organization.
But for now Xemnas would wait. Fourteen was nowhere near having the full desired effct on Number Thirteen, and as their plan progressed, Xemnas wished to see how Roxas changed, if at all.
But that time hadn't arrived yet. Castle Oblivion would be the first blow, allowing the cobwebs of the Organization to be swept away and the plans given their free rein to proceed. Until then, Roxas' heart collection would be enough to make the Keybearing Nobody useful. Xemnas would let the boy enjoy some simplicity.
But just until the realy fun began.