Usually, we get the BTS to MVs after the MVs are released, but the girls are using it as another teaser! In the clip we get bits of the song as well as what the MV will look like. The girls fool around for a bit on camera as well, which is always cute to see.
TWICE's 'Knock Knock' holds 24-hour view record for only a few minutes as BTS sets new YouTube record
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