The Mangekyo Sharingan is an advanced form of the Sharingan eye technique in Naruto, awakened by Uchiha clan members after intense emotional trauma and linked to powerful abilities such as genjutsu and the Amaterasu flames. Members of the Akatsuki, including Itachi Uchiha, are among its most recognisable users, which helped the sound become a shorthand for dangerous, elite power in fan culture. It spread through anime edits, AMVs and short-form videos, where creators reuse the brief activation cue to signal a reveal, a hidden ability or a turning point.