Watashiwa said:
My personal favorite scenes ... and how Zero comes into existence.
Lelouch of Britannia is a wonderful story and easily has my recommendation. As mentioned, its how he remains in the royal family after his mother was killed (forgot what happened to his sister).
As a prince, he does quite a few unconventional things - he used "tanks" instead of Knightmare frames and goes on to win campaigns in Africa - battles which other Britannian generals had really hard times with.
The story has recently shifted to Japan, but its a very different scenario there.
One way to compare this with canon -
Canon is the story of how Lelouch uses Japan to fight his father.
This fanfic is how he remains in the royal family to pursue his own objectives; quite frankly, I'm confused about his motives - but its a good story, regardless.
Oh and what I just quoted? Its the part I find most disappointing about the fanfic. Zero ... well, he's not what I expected/wanted him to be.
-chronodekar