[ashlay]

Originally Posted by Koshimizu

I think the reason why they design Lelouch with longer hair is to show that he's still growing. Unlike C.C., who's not aging nor changing. For Rai...

Spoiler for my guess:

I think it's because he's been sleeping all the time after that tragedy, until Bartley wakes him up. And he's sleeping in the Geass ruins, which may have some effect in keeping him this way.
BTW C.C. mantioned those who loved her or hated her are all washed away in the river of time, and she's left alone. If they don't die of age, then she'd have to kill them one by one... Which I don't think that the case. *sweatdrop*

>_> That right there is even more morbid than her usual responses.

Spoiler for :

The ruins seem to have a lot of "interesting" uses, so it doesn't seem that unreasonable to just go ahead and through a cryogenic sleep system on it for an alternate universe story.

I'm inclined to agree that Rai's not immortal, even though the possibility of him being one brings up some interesting questions about Lelouch's fate.

As for the hair thing, given V.V., I think it's fairly clear that geass immortals hair still grows, even if they don't age in any noticeable ways, so unsure if the hair thing isn't just a psuedo-red herring or not.