I enjoyed the art stile with the hand drawn images, you could make the gui a little bit better like a better main menu cause you want the first person for somebody to see while playing your game look good.
The music was a good choice, the gui could be shown without scrolling down. it should start off showing the chapters and then it tells you what the chapter is about then you can play.
The entire choose your own path thing is cool. The sound effects are okay but i enjoy the visual novel aspect with all the text.
You could make the endings longer though and I was immersed into the story. I think that each ending should take about 20 minutes to get, or even more. You should create a screen for when you unlock a new chapter because I didn't even know I was on the 3rd chapter already. The main menu should have so much more stuff, achievements, and an ending list.