Unlike sounds taken from a single well-known scene, this clip circulates online mainly as a short, shareable reaction sound, with its appeal coming from the familiar anime-style address onii-chan and the playful question that follows. Creators reuse it across short-form videos, edits and soundboards because the phrase is instantly readable even without context: someone is baffled by over-the-top behaviour. Its one-second length makes it easy to drop into fast-paced compilations, and that portability, rather than a single original broadcast, explains why it keeps appearing in new memes and reaction clips.