Place it right at the peak of a reaction, just before a cut to the stunned face, then follow it with Anime Wow for the delayed realization. It also works as the lead-in before a sudden failure reveal in anime edits.
關於此聲音
This clip is Shamiko's flustered abababababa babble, a rapid burst of panicked anime girl voice lasting just under three seconds. It feels frantic, embarrassed and helpless in a cute way, like a character overwhelmed mid-argument. It comes from the anime character Shamiko, known for melting down when flustered.