Put this clip at the reveal itself, then follow it with Anime Wow to stretch the moment, or Dramatic Dun Dun Dun when the twist turns serious. Keep it as the first reaction cue so later sounds build on it, not compete with it.
About this sound
This is a brief Animal Crossing emote sound, a little startled chirp lasting just over a second. It feels playful and suddenly alert, like a character freezing mid-step after noticing something odd. The cue comes from that series, where small expressive reactions help characters show surprise without words.