Place it at the start of a scene where someone waits outside, then follow it with Dun Dun Dun while the door stays shut and Vine Boom when it finally swings open for the reveal.
이 사운드에 대해
This is a door-knocking clip lasting about 43 seconds, centred on knocking on Sorrizo's door. The knocking creates a tense, expectant feeling, like someone standing outside and waiting for an answer that does not come straight away, with the waiting adding to the awkward sense that somebody is still there and will not go away.