Xehanort/Eraqus as a direct narrative parallel to Riku/Sora in which two people who care about each other are spurred by tragedy onto opposite sides of the light/dark divide, but where Sora and Riku find a way to meet at a middle point and move forward together, Eraqus and Xehanort kept pushing away until their views twisted into staunch extremism.
KH loves to do this kind of thematic mirroring. Y'all know how it loves its parallels. I'm gonna lose my mind.












