Put it just after the repeated play is shown, so the repeat is clear before the line arrives. Pair it after Enemy Spotted to set up the copied move, then follow with Okay Let's Go to restart the action.
このサウンドについて
This is a short, about-two-second voice line in a bright, playful game-character voice, with a quick, knowing delivery. It feels cheeky and familiar, like catching a scene repeating itself exactly as before. The line comes from Starr Nova in Brawl Stars.