This is a very pretty game. The night/day shift looks great, and really helps differentiate A and B in a natural way. The rocky terrain was a bit hard to navigate at times. I got stuck in a crack at one point (thank you for putting in the R button!), and often felt like I was going the wrong way.
I did appreciate that dying doesn't cause you to lose much progress. In fact, there was one switch where dying seemed to be the only way back to the main path? Maybe I missed something there.
Well done!