Omaru Polka is a Japanese VTuber with Hololive Production who debuted in 2020 as part of its fifth generation, building a following for energetic comedy and expressive stream reactions. Short clips of her vocalizations, including this nyeguu noise, circulated among fans through stream highlights, fan edits and social media reposts. The sound became a shorthand reaction within the VTuber community, used to signal playful confusion or cute frustration without needing context. Its lasting appeal comes from how recognisable Polka's voice is, even in a three-second clip detached from the original stream.