User blog comment:Zero15/Code Geass R3/@comment-121.54.92.210-20140507025402/@comment-66.67.69.230-20141005060109

The Geass that Lelouche refers to as "Suzaku's responsibility" is meant to be symbolic, as he carries the responsibility of taking on Zero's persona. That's how I interpret it at least.

Marianne essentially possessed Anya, which is why she is always talking about her false memories and recording everything in her diary.

I do believe that Lelouche is immortal as a result of killing his father, though technically he never entered a contract with him so that would be debatable. Either way in my mind I'm 100% certain that he is alive. He talks about dying and dissapearing synonomously; I believe the intent was always to stage his death in order to achieve peace, and simply spend the rest of his life in hiding with C.C.