Place it just after the on-screen reaction to an internal ache, then follow it with Vine Boom for a sudden shock or Bone Crack for a sharper physical gag, keeping this clip as the first setup before the bigger reaction lands.
이 사운드에 대해
This short clip is listed under the Chinese title 體內, read as Ti Nei, meaning inside the body. It is presented as a single sound effect for quick reactions. The title gives it a strange, inward feeling, as if something is happening beneath the surface and cannot quite be put into words.