Tsubasa Hanekawa is one of the central characters in the Monogatari anime series, known for her calm intelligence and gentle, teasing manner. Her soft waow has been clipped and shared through anime soundboards and short-form video edits, where it is reused as a compact reaction sound rather than a direct quote from a scene. Its appeal comes from its recognisable anime voice and light-hearted tone, which fit cute, wholesome and lightly surprised moments without needing context. That versatility has kept it in circulation among Monogatari fans and meme editors.