So the blame for this lies entirely on my thesis because I can’t stop thinking about Arthurian Legend and the fact that Code Geass just has so many references to it makes it all worse. Strap in, because I’m about to attempt to meta. And what’s a better place to start than my favorite character.
Someone needs to throw in all the stuff about the relationship between Lancelot and Gawain, too.
Very brief summary from what I remember reading of Morte d’Arthur: Lancelot and Gawain are BFF, though at one point Lancelot obtained a weapon that supposedly cursed everyone who used it to kill the person they loved most. Time passed, they remained BFFs until all the stuff with Guinevere happened, and Gawain got pissed that Lancelot was willing to fight against his former allies to save her. They become enemies, fight a bunch of times, and eventually Gawain is killed after obtaining a minor wound from that cursed sword - but before his death he and Lancelot made amends.
After all this… and everything else with Camelot… Lancelot chooses to spend the rest of his life serving penance at a monastery.
In conclusion, Arthurian mythology has Code Geass spoilers.