The sound comes from Fairy Tail, the long-running fantasy anime series, and is associated with Happy from Fairy Tail, the cheerful blue Exceed who often reacts with wide-eyed excitement. Short reaction lines like this were clipped and shared on soundboards and in fan edits during the rise of anime meme audio, where a single exaggerated delivery could stand in for a viewer's own surprise. Its appeal has lasted because it is instantly readable, family friendly and flexible enough for gaming, edits and everyday reaction posts.