The exact origin of this clip is not documented, and no source work, character or year has been confirmed. It circulates on user generated soundboards as a short Japanese reaction line, where listeners adopted the phrase 'kore da, kore da wa' as a universal signal of triumphant discovery. Its appeal needs no translation: the rising excitement and the repeated 'this is it' land instantly in memes, gaming clips and reaction edits. Because it is brief and high energy, it keeps resurfacing whenever creators need a quick, joyful payoff for a reveal.