Tamura-san (appearing at the end of the video) has a very unique aspect: his mouth roughly forms the words he's saying. This is peculiar, as only the most important characters in the game have that feature. To compare, the video starts with three other NPCs - one of whom, Tom, is significantly more important and appears in a few cut-scenes throughout the game, and the other two of which have equal or slightly more importance than Tamura-san.
Why is a minor, seemingly random NPC given such treatment? It could be a remnant of an earlier build when it was likely they intended to give him a significantly larger part of the storyline, or that they initially intended to make all the NPCs mouth their words. My guess is simply that he was just a test early on - it's unlikely he'd go from such a major part to offering nothing at all to the story.
