Place it at the exact protest moment in a reaction edit, then follow it with the Anime Ahh Sound Effect for a bigger second reaction, or precede it with the Tuturu sound for a lighter setup before the protest lands.
關於此聲音
This is a 2.8-second voice clip of the Japanese phrase yamete kudasai, said in an anime-style delivery and translating to please stop. It feels pleading and flustered, turning a small protest into exaggerated embarrassment or mock panic. The line is widely recognised from subtitled anime scenes and character voice lines.