I had my doubts before watching upon reading some comments saying the acting was cringe..
well, it was cringe in the first 5 or 10 minutes of the movie but it improved a lot so I could overlook that.

I haven't read the manga, so I went in with zero prior information. all I got is what the movie presented.
the story is interesting, there are questions that pop your mind from the beginning but have patience, you'll figure things while watching. (almost!!)
The amount of new characters at the start felt a bit overwhelming for me but it got better as story moved forward.
I liked the pacing of story a lot! It's neither fast-paced nor slow.. it has the right pacing.
the amount of info they fit in a 2 hour movie was ok.

Here comes the spoiler content of this review, so don't read further if you don't want to be spoiled about the ending;
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I was all praise and compliments until I reached the ending... which affected my rating..
It could've been a lot more satisfying to see the last game result between usogui and that guy (royal leader)...
wasn't the whole point of Usogui's comeback to beat him??
watching the movie, it more felt like beating everyone else like that crazy old man and Sadakuni were just steps of a ladder for getting back at that guy.