User blog comment:Hihowru/Does Lelouch really die in the end?/@comment-72.226.1.188-20140427154016

If Lelouch had received the Code from his father, Charles, then he wouldn't be able to use his geass anymore and become immmortal. However, we see him use his geass(on Nunnally for one) after his father dies so he can't be immortal. Either this or I missed something on the show.