Chidori is a lightning-style ninjutsu from Naruto, created by Kakashi Hatake and later used most famously by Sasuke Uchiha. In the series it concentrates lightning chakra in the user's hand, producing its distinctive crackling, bird-like chirping sound that gave the technique its name, which means one thousand birds. The sound became closely associated with high-stakes battles in the anime, which began in 2002, and fans have since reused it, alongside other Naruto technique sounds such as Mangekyo Sharingan, in edits, memes and fan videos to signal speed, precision and overwhelming power.