Geass vs. Geass (episode)

Geass vs. Geass is the fourteenth episode of Code Geass: Lelouch of the Rebellion.

Summary
Lelouch believes Shirley may have discovered his identity as Zero, so he and C.C. pursue her to Narita. Ohgi explores the battlefield of the previous night, discovering a wounded Villetta Nu left for dead out of sight. Lelouch encounters Mao, a young man who also has the power of Geass, which he uses to read minds, and thereby wins a chess game with Lelouch. Mao used his abilities to play on Shirley's insecurities, manipulating her into shooting Lelouch, but she falters at the last moment and C.C. sends Mao away temporarily. Lelouch uses his Geass on a grief-stricken Shirley to erase all her memories of him.