The sound comes from Blue Archive, the anime-style role-playing game centred on students at the academy city of Kivotos, and features Michiru Chidori, one of its characters. The shubabababa vocal is the kind of short, characterful line that fans lift from gameplay and voice lines because it is easy to recognise even without context. Shared through soundboards and short-form edits, it has become a shorthand reaction for playful mischief among Blue Archive fans, keeping it in circulation long after its first appearances in fan videos and memes.