Naruto is a Japanese anime and manga series centred on young ninja, and jutsu are the special techniques those ninja use in battle, from basic hand signs to the Mangekyo Sharingan. Sounds tied to those techniques became instantly familiar to fans through the anime, which ran for hundreds of episodes and built a huge global audience. Online, short Naruto audio clips spread through fan edits, reaction videos and meme compilations, where a two-second burst could signal a power-up or a fight starting. That shorthand still works today because viewers recognise the reference immediately, even without seeing the scene.