Code Geass 01x14

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 the wounded Villetta Nu left for dead out of sight. Lelouch encounters Mao, a young man who also has the power of Geass. Mao uses his mind-reading power 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. Since Shirley is being torn apart by grief and guilt, Lelouch uses his Geass to erase her memories of him.