Genjutsu is the illusion-based technique from Naruto, the manga and anime series by Masashi Kishimoto, most famously used by Uchiha clan members through the Sharingan. Characters like Itachi Uchiha, a member of the Akatsuki, became iconic for casting it with the Mangekyo Sharingan to trap opponents in vivid false worlds. As Naruto clips spread on video platforms and soundboards, the short activation sound became a standalone cue for hypnosis and deception, and it remains popular in edits whenever a creator wants to signal that reality has been manipulated.