Love Alarm is a South Korean drama adapted from a webtoon and released on Netflix, centred on an app that alerts users when someone nearby has romantic feelings for them. The distinctive alarm became closely linked with the show's central premise and was quickly picked up by viewers making edits, reaction videos and couple compilations. Its short, recognisable tone works as shorthand for a crush being revealed, which is why it still appears in romantic edits and K-drama memes long after the series first aired.