Kadokawa Shoten has published four manga adaptations of Code Geass
, each containing alternate storylines. The first, Code Geass: Lelouch of the Rebellion
, by Majiko~!, focused on the protagonist of the series, Lelouch Lamperouge. It was originally serialized Monthly Asuka, starting in October 2006. Interestingly, the manga has started to branch off from the anime, beginning to do so during it's equivalent of the second season.
The second, Code Geass: Suzaku of the Counterattack
(コードギアス 反攻のスザク, Kōdo Giasu: Hankō no Suzaku?), serialized in Beans A magazine, focused on Suzaku Kururugi. Written by Atsuro Yomino, it is set in an alternate reality where Knightmare Frames do not exist. Wearing a human-sized enhancement suit provided by Lloyd to greatly boost his physical ability, Suzaku takes on the identity of Lancelot, a masked government-sponsored crime fighter and superhero. Opposed is the criminal organization known as the Black Knights.
Code Geass: Nightmare of Nunnally
(コードギアス ナイトメア・オブ・ナナリー, Kōdo Giasu Naitomea Obu Nanarī?), focused on Lelouch's sister Nunnally Lamperouge, was serialized in Comp Ace and written by Tomomasa Takuma. When Lelouch goes missing in the incident at Shinjuku Ghetto, Nunnally encounters an entity called Nemo, which restores her health and grants her the ability to summon the Knightmare Frame Mark Nemo. Using these, Nunnally attempts to seek out the whereabouts of her brother. However, her actions rouse the interest of the elite covert-ops Britannian Special Foreign Legion "Irregulars," which seeks to capture or kill her.
The most recent manga adaptation, Code Geass: Tales of an Alternate Shogunate
( 幕末異聞録 コードギアス 反逆のルルーシュ, Code Geass: Tales of an Alternate Shogunate?), was serialized in Kerokero Ace. It is set in an alternate history in 1853 with new characters. Britannia's Black Ships appear in the harbor of Uraga. Some years later, Lelouch Lamperouge (琉々朱・爛縁侍, Lelouch Lamperouge?) — brother to a young blind girl named Nunnally (那奈離, Nunnally?) — is the commander of the military counterinsurgence brigade known as the Shinsengumi, formed under the orders of the Shogunate to fight the Black Revolutionaries (黒の維新団, Kuro no Ishin Dan?), a rebel group led by a mysterious masked individual known as Rei (零, lit. Zero?). In fact, these two organizations are one and the same, and they seek to combat in influences of Britannia. Geass is the ability to call upon and summon the armored entities referred to as Knightmares (騎士銘亜, Knightmares?); Lancelot (蘭須露斗, Lancelot?) is one such Knightmare.