Amazing art! I totally fell in love with your style and I'm excited to discover you made a few visual novels, I will defenitely check them out!
Unfortunately, the game itself wasn't challenging enough for me. I tried the Windows version and I still find it too slow, even when pushing the right arrow. Regardless of that, I cannot say I got bored super fast, as I stopped playing at 2k+ points :D
I also like your idea for the theme; simple, but still both engaging and relaxing in its' own way. Good job!