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.
- Anachronism Stew: Pizza and Humongous Mecha in 19th Century Japan.
- Arson, Murder, and Jaywalking: Thus the Japanese people lost their land their pride and even their topknots.note
- But Now I Must Go: Lelouch and C.C. leave Japan to Euphemia and Suzaku before disappearing
- The Cameo: Milly and Shirley as clerks at the pizza shop.
- Enemy Mine: Euphemias forces and Lelouchs ally to fight Perry
- Excited Title! Two-Part Episode Name!: "Defeat Perry! Japan opens up to the world at last!"
- Jerkass: Jeremiah mistreats Suzaku for letting Zero get away.
- Kick the Dog: Matthew Perry shooting his own men with the Hadron cannon.
- Lighter and Softer: The only named character to die is 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. It's worth noting that this manga ran in a magazine (Kerokero Ace) squarely aimed at lower elementary school aged boys, while other manga versions of Code Geass have ran in older shonen or seinen magazines.
- Living with the Villain: Suzaku and Lelouch. Lelouch knows all along that Suzaku is his enemy, while Suzaku is unaware until shortly before they join forces.
- Mole in Charge: Lelouch is in charge of the Shinsegumi, and the head of the Black Knights they are tasked with finding.
- Never My Fault: 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.
- No-Sell: Perrys Geass powers dont work on Suzaku, enabling him to force him to surrender.
- Pose of Supplication: Perry's Geass victims, Suzaku when being punished by Jeremiah and Perry himself when he is defeated.
- Schizo Tech: Knightmare Frames aside, there are many pieces of overly advanced technology, such as radio communicators.
- Wham LineSuzaku: Zero, I understand your viewpoint. Then we should be able to work together. Zero... no... Lelouch.