Place it at the exact moment two characters recognise each other, then follow it with the Law and Order Dun Dun to close the scene. For a confrontation, open with the Metal Gear Alert before the line, so the meeting reads as a discovery rather than a coincidence.
关于此声音
This six-second clip is a single voice line, 'Actually, we've met once before,' presented as a direct address to the listener. It feels awkward, tense and faintly menacing, turning a polite introduction into an uneasy recognition. The line works because it suggests a shared past the listener cannot place, leaving the encounter feeling strange and unresolved.