I just finished your game. I must say I'm in awe! Your ability to write is really something out of this world, I was gripped along the journey of this small story :).
I feel that this is a pretty contained little game, and it achieves everything it tries to do!
To make the game more dynamic, you could add some sound effects for each scene. For instance, the sound of birds, the leaves and wind, or a very light breeze at the moon scene. You could also add some sound effects when turning the page. However, this is more me being nitpicky than anything else :).
Honestly, this game is really fun and I enjoyed your writing a lot :).