Rather than coming from one identifiable series, this wow belongs to the wider family of exaggerated anime reaction sounds that circulate on soundboards, meme pages and editing apps. Creators reuse the same style of surprised vocal because it is instantly recognisable as anime, even without knowing the original clip. It spread through reaction compilations, TikTok edits and short-form videos, where a single expressive sound can carry a joke on its own. Its continued popularity comes from that versatility, working for surprise, disbelief and playful drama across almost any kind of content.