Place it right after the twist is revealed, as the closing line at the end of a build-up, then close the edit with JoJo To Be Continued for a cliffhanger finish. For a bigger anime moment, open with Za Warudo Time Stop before the reveal, then let this clip answer it.
關於此聲音
This seven-second clip is a single Japanese voice line saying 'keikaku doori', the phrase for a plan working out exactly as intended. The delivery is calm, smug and deliberate, turning a simple statement into a knowing reveal. It feels triumphant and a little sinister, like catching someone realising they walked straight into your scheme.