The yandere archetype comes from Japanese anime and manga, where a character who seems sweet and loving becomes obsessive, jealous and dangerous, and that sudden switch has become a popular shorthand in fan edits. Clips labelled with a year like 2014 often circulate as short intros for compilations, character showcases and parody videos, where the music alone signals that a cute setup is about to turn sinister. Because the trope is instantly recognisable to anime fans, the sound still works as a quick mood-setter for creepy, comedic and dramatic edits.