Comments by "xXxSkyViperxXx" (@xXxSkyViperxXx) on "Aizuchi: Why it's impolite not to "chime in" in Japanese" video.

this is usually present in most languages and cultures. its just a matter of frequency. japanese has normalized the frequency of it, enough to even have a name for it. its neighbors, as you mentioned in the video, also do it with slight differences in frequency. korean does it more frequently and mandarin has it but not as much. for japan's southern neighbors in southeast asia, philippines has it too and it can be done frequently but its not usually done as frequently.
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