[[quoteright:266:http://static.tvtropes.org/pmwiki/pub/images/Code_Geass_Tales_of_an_Alternate_Shogunate_7679.jpg]]

A ''Anime/CodeGeass'' {{Elseworld}} manga by Ganji and Yoshijiro Muramatsu.

The year is 1853, Matthew Perry, using the power of Geass, forces Japan to open its ports to outsiders. Opposition arises in the form of the Black Knights, a resistance group that seeks to aid the oppressed citizens of Japan, led by the mysterious Zero. Meanwhile, Suzaku Kururugi, a low-ranking {{Samurai}}, tries to catch Zero despite the prejudice against him, not knowing that Zero's true identity is Lelouch Lamperouge, his friend who is head of the Shinsegumi. The introduction of the seventh-generation Knightmare Frame "Lancelot" has the potential to tip the balance of the conflict.

!!Tropes:

* AnachronismStew: Pizza and HumongousMecha in 19th Century Japan
* ArsonMurderAndJaywalking: “Thus the Japanese people lost their land… their pride… and even their topknots.”
* BadassArmFold: Lelouch in the Gawain.
* BadassNormal: Suzaku, to perhaps an even greater extent than his other incarnations. He can even stand up to Knightmare Frames before he gets the Lancelot.
* BeardOfEvil: Perry
* BigBad: Perry
* ButNowIMustGo: [[spoiler:Lelouch and C.C. leave Japan to Euphemia and Suzaku before disappearing]]
* TheCameo: Milly and Shirley as clerks at the pizza shop.
* DemotedToExtra: Several characters, notably The Emperor, who only gets a brief mention by Euphemia.
* DetectiveMole / MoleInCharge: Lelouch is in charge of the Shinsegumi, and the head of the Black Knights they are tasked with finding.
* EnemyMine: [[spoiler:Euphemia’s forces and Lelouch’s ally to fight Perry]]
* ExcitedTitleTwoPartEpisodeName: "Defeat Perry! Japan opens up to the world at last!"
* EvilLaugh: Perry, which doubles as an AnnoyingLaugh.
* FatBastard: Perry.
* JerkAss: Jeremiah mistreats Suzaku for letting Zero get away.
* KilledOffForReal: Presumably [[spoiler:Jeremiah]]
* HistoricalVillainUpgrade: Perry
* HumongousMecha: They’re still present in the story, and Lelouch’s Geass now allows him to summon them.
* KatanasAreJustBetter: Suzaku wields one.
* KickTheDog: Matthew Perry [[spoiler:shooting his own men with the Hadron cannon]].
* LighterAndSofter: The only named character to die is [[spoiler:possibly Lord Jeremiah]], and Lelouch and Suzaku are consistently heroic, albeit with different ideals, throughout the work. Even Matthew Perry is significantly less evil than the antagonists and some of the protagonists of the other incarnations.
* LivingWithTheVillain: Suzaku and Lelouch. Lelouch knows all along that Suzaku is his enemy, while Suzaku is unaware until [[spoiler:shortly before they join forces]].
* NeverMyFault: Jeremiah blames Suzaku for Zero's escape, although Lelouch claims that he let slip sensitive information. Then again, it's quite possible that Lelouch was actually the one responsible.
* NoSell: [[spoiler:Perry’s Geass powers don’t work on Suzaku, enabling him to force him to surrender]].
* PoseOfSupplication: Perry's Geass victims, Suzaku when being punished by Jeremiah and [[spoiler:Perry himself when he is defeated]].
* {{Samurai}}: Suzaku is introduced as a low-ranking Samurai
* SchizoTech: Knightmare Frames aside, there are many pieces of overly advanced technology, such as radio communicators.
* TheShinsengumi: Lelouch is their leader.
* SmugSnake: Perry
* SparedByTheAdaptation: Everyone who died in the anime.
* TransformingMecha: [[spoiler:The Black Ship]]
* VillainousBreakdown: Perry, after [[spoiler:the Britannian forces under Euphemia turn on him]] and again after [[spoiler:he fails to Geass Suzaku]]
* WeHaveReserves: [[spoiler:Perry’s mecha]] attacks his own troops.
* WhamLine
-->'''Suzaku''': Zero, I understand your viewpoint. [[spoiler:Then we should be able to work together. Zero... no... Lelouch]].
* WhatCouldHaveBeen: Kallen sneaks into the creators’ offices and finds unfinished concept art. Nothing seems too out of place until she sees that Nunnally’s cart is equipped with hadron cannons.