This game was very fun but extremely challenging. I had played picross in the past but didn't know much strategy so I really struggled. I had to use the solutions as hints to solve most of the levels past the first set. Also, when you complete 3-1 the game goes to a black screen so I was unable to complete that set of stages.
The visuals are nice, with pretty images of Doremy and Sagume and multiple versions of Sagume representing her at different times in the past.
The music was good but got repetitive because the game took me several hours to complete.
The story and writing are good and I'm intrigued, but not exactly sure what's going on. That's exacerbated by the inability to progress past 3-1, so 1/4 of the cutscenes I never got to see.
I'm not sure how well the game actually ties in to the theme, since I'm not sure what's going on in the story.