Hou Yu appears as a user-generated entry on a public soundboard, where the raw title pairs the name kazehaya_yui with the label Hou Yu and provides no artist, track, or show credits. With only a few hundred plays recorded, it reads as a niche upload rather than a mainstream meme, circulating mainly through direct shares and small edits. Its continued use seems driven by practicality: at just over eight seconds it is easy to drop into timelines, and its ambiguous, unlabeled nature lets creators repurpose it freely without strong associations.