Put this clip right after the culprit is exposed in your edit, preceded by Anime Wow for the victim's stunned reaction, then follow it with Dun Dun Dun as the final beat before cutting to the scoreboard or replay.
Über diesen Sound
This 1.4-second clip captures Usada Pekora delivering the line that she will not forgive you in a high, indignant voice. It feels like a playful scolding rather than real anger, equal parts cute and mock-offended, which makes the rebuke land as a joke. Pekora is a rabbit-eared VTuber from Hololive.