This was an incredible game. The bite-sized, outwardly simple puzzles were intuitive and (usually) quick to solve, but they still forced me to think and consider the logic behind the different pieces, keeping me engaged in them and giving a sense of pride whenever I sussed out the solution of a particularly challenging one. The quick puzzles really helped spur me onward to complete each one after the next, helping me not get bored of the game. And once I got through what I thought was the game, there were so, so many interesting secrets to find, more puzzles and mechanics to twist my mind around as I solved. There were so many secrets and new things to do that when I finally reached the true ending, I almost didn't believe that it was actually the ending.
The art direction was cute and charming, the music was moody and atmospheric, not distracting at all, there were some cute sound effects with the doodles, and the story had a bittersweet, "passing the torch" angle that invested me in Raide and the mysterious grandfather. This is the kind of game I gladly would've paid money for, an absolutely wonderful use of my time.