This sound comes from Ai Hayasaka, a popular character in the anime and manga series Kaguya-sama: Love Is War. Short voice moments from the series spread widely through anime fan edits, compilations, and meme reposts because the cast has many expressive delivery styles. The “hey hey” clip remains useful online because it is extremely short, easy to loop, and recognizable to fans without needing much setup. It is mostly used for playful reactions, light trolling, and quick anime-style punchlines.