Really well done on the theme.
The narrative of the game is really nicely done and it's very good.
The music is also very good and the movement feels nice enough(it could be slightly improved upon I think by allowing the player to jump from a little more on the edge)
SFX are good as well.
I think you could add a bit more environmental artwork and make the game look a bit better, improve the UI as well in terms of art. Maybe if you want to work on this add more levels and have the narrator be the final objective to clear. Also I would suggest a back to menu button in game. Just allows the player to check inventory. Also provide hints in game as to why they should purchase from the shop.
Overall a really nicely implementation of the narrative into a great game.