Board Thread:Theories and Speculation/@comment-26538017-20150629134356/@comment-24357950-20150629143815

33hecksann wrote: Do you think all the people in the entire world have chakra... btw how did Kaguya trapped normal people inside Rinne Sharingan ? I do think everyone in the Naruto world possesses chakra, yes. Just not everyone who does takes this opportunity to become a ninja, which is understandable. And as Sarutobii2 already said, Genjutsu is the manipulation of the chakra flow through sight and hearing, and maybe also feeling(?), tasting(?) and smelling(?). Consequently it wouldn't work on anyone outside the Naruto universe. But I sometimes do wonder. Isn't there the kind of Genjutsu that changes the visual image of something for everyone? I slightly remember a situation where Izumo and Kotetsu disguised as Genin and, according to our wiki here, "[...] had cast a genjutsu on the area". So Genjutsu as we know it works by manipulating the chakra flow. But does the same go for areal Genjutsu like the performed by Izumi and Koketsu?