Very nice design!

At first I didn't understand how points are counted at all, only then I realized that it's the face of the dice that is landed on that is multiplied, not the one that will be on top, as it's usually done. After all, one usually reads the dice by the top face. However, I can understand it being done so that you don't have to look at opposite sides of the dice.

Also, as mentioned here in other comments, at first I thought they were talking about the target number of points, not the minimum.

I would also like to point out that it is worth not playing the sound of finished moves when winning, as well as when losing. The "Daiku" label and pronunciation are good, but they are interrupted by this sound and the second panel with "No moves left". At the end of the level after all the animations on the screen, only the "Next Level" label says that you have passed the level. And that "Daiku" label is hidden. And even the number of points in this understanding does not help because of the same label "Target score" rather than "Minimal score".

I really liked the camera work, the nice smoothness of the camera allows you to see all sides without any discomfort.

Very cool puzzle game! I love the atmosphere, and the UI looks really clean! Just out of curiosity, is it possible to get the target score exactly in each level, or is it the minimum goal you want to reach? Either way, great job with the game!