The Rinnegan is a legendary eye technique from Naruto, the long-running ninja manga and anime series, where it marks characters with extraordinary, almost godlike power. The technique is most closely associated with figures such as Pain and Madara, whose appearances instantly raise the stakes of a story. As clips and edits from the series spread across YouTube, TikTok and other platforms, the activation sound became shorthand in anime edits for a sudden power upgrade. It remains popular because listeners recognise it at once, even without seeing the character on screen.