If you know Japanese culture and have some knowledge about Japanese culture or are fascinated by Japanese culture only then watch it, because the movie shows the Japanese culture to it's core so some people might think it's boring and had no climax but that's Japanese culture for ya, so if you are watching this movie with a Hollywood mindset you might find it boring, it's hard to say what i mean by JAPANESE CULTURE because it's not just 1 big thing it's a collective group of small things.
So if you find the movie boring it's not for you, because as i said it's shows the Japanese culture and Japanese people mentality to it's core and it shows it very well so i loved it , and for note i am not Japanese but i was always fascinated by Japan and it's culture so only give it a watch if you are familiar with Japanese culture to a certain degree or is very Fascinated by Japan or you might find it boring and with out any Climax, if you are not familiar or fascinated with any Japanese culture don't watch it, this movie is not for everyone, like few Hollywood are like that everyone will like it or mostly but this movie is little specific and i told you what is the specific part.
Enjoy.