Place it as the final beat after the offending line in your edit, not under background music. Lead in with an awkward moment sound button, then this line, then follow with a wtf boom sound button for the over-the-top reaction cut.
इस साउंड के बारे में
The clip is a six-second voice line where Shigaraki says 'Mind your manners' in a low, drawn-out delivery. It feels cold, threatening and quietly furious, like a villain losing patience rather than shouting. The calm wording makes the warning hit harder, turning a polite phrase into a clear threat.