I'm on a Tazza run right now, so I thought I'd watch the newest one as well.
Sadly it did not live up to my expectations.

Here are the most noticeable flaws:
- The acting was pretty iffy, but overall I think the directing was the bigger issue.
- The lack of tension, especially at times when the viewer should feel it.
- To add to the previous point, the lack of music. Usually background music helps build the tension a lot. But in quite a few scenes where they should have added it, there was none, which I feel was very detrimental to the atmosphere of the movie.
Going with no music at all could actually be very interesting, but the acting and directing has to be solid for it to work, in my opinion.
- A lot of crucial scenes were omitted.
Characters were getting kidnapped without showing the actual scene.
We were lacking some insight into the characters' thoughts at times.
- The finale felt very dumb and lackluster. Realistically speaking, nothing guarantees that the opponents will keep their word if they lost so it all felt pointless.

I was intrigued by Ozawa's story the most, but I'm not satisfied with how they chose to portray it either.
The first half was at least enjoyable, and the movie being quite short there wasn't much left after that.
If you do want to start it, I would just advise you to not go in with any expectations and just enjoy the ride!