Put it at the very end of an edit, after the main action has finished, as the final reaction. Pair it with Anime Wow for a bigger response, then follow with Bell Ding to close the moment cleanly.
Over dit geluid
Niw is a very short sound effect lasting just over one second, built around a single quick vocal-style blip that gives the clip its name. It feels light, playful and slightly odd, the kind of tiny noise that makes a chat pause for a second before moving on. Its brevity is the point, landing fast and leaving nothing to explain.