Let's get things straight: this short is not for everyone. Perhaps even more so than feature-length works of Kiyoshi Kurosawa. It's mundane, it doesn't care about answering questions or following the traditional rules of storytelling. You shouldn't try to decode it from the point of everyday rationality or even the traditional cinema structure.
Instead, the movie is interested into raising an issue that was already present The Cure, updating it and setting the mood that compliments the idea. From my point of view, it's not so much a movie about depression, but a movie about the virus of violence that infects those who're troubled with their lives. As the movie progresses, we feel that the virus of violence spreads more and more. I think in a current day and age it's a really important idea, because sometimes I feel like the violence starts capturing minds of more and more people even in their everyday life.
The lonely and mundane tone complements this idea by suggesting on how this disconnected, distant and superficial relationships complement the development of the virus.
So yeah, I don't think it's the best of Kurosawa, but still, I feel like it's an interesting and important short movie. Just please, don't try to watch it as a conventional horror movie or even a conventional movie in general.
