Listed online under the name yanyantuuwu Light Chaser, this clip circulates mainly as a short reusable music cue rather than as a full song excerpt with a widely documented release history. Its appeal is practical: the melody is distinctive enough to set a mood quickly, but neutral enough to fit many kinds of edits without stealing focus. Creators reach for it when a scene needs momentum and lightness, especially in fan edits, short montages, and social clips where a few seconds of music have to establish tone immediately.