It’s a reference to the 2007 anime Code Geass, considered one of the greats. They’re the main characters that are childhood friends living in a subjugated Japan under a large authoritarian superpower. Lelouch spends the show scheming to burn the current order down to then build a new world from the ashes while Suzaku works to carve out better living conditions for the oppressed Japanese and improve the world from within the system. Who is right? Within the show it’s debatable. It’s got a lot of anime tropes, but it’s pretty good.