Didn't sound very interesting at first but seeing how the patterns were made in order for you to sneak in and hit really showed what the idea was all about. I couldn't get past the pattern with the alternating orange and blue rings though, don't know if it's really hard or I'm missing something that should be obvious.
Bit of constructive feedback on the graphics, please don't upscale pixel art sprites. Was probably just due to time restraints and such, but yeah, it looks bad.
Nice to see a cool Japanese title that isn't just katakana by the way.