I really enjoyed this game! I don't want to do spoilers, so I will try not to. Summary of the following next: The game is cool, the story is great, it can be a little bit hard, but you can solve it (it needs time and thought xD). It would be great if you put some info of the game in the description.
I want to help you in what I can, so this is what I found. First, it would be nice if you had the option to exit the game (I couldn't find it). The options within the scene it's very original, but I would draw a window or someting instead of leaving them in a white rectangle.
The text in red color is not de best option for me, maybe you can put some box to hold the text (not full opacity, maybe 80%, depending of the color of the box you choose). I understand the reason why the text overlaps when you fail, but I strongly recommend put the repeated lines in a slightly different color (for example, if you have the text in black, you can put the rest in different shades of gray), it's ok make it difficult to read, but not unreadable (It happens if you fail a lot, you miss the rest of the story, and I think that this is not the point in a game with story). And, I would look for a typography with more personality instead of the classic sans serif font.
When you have to answer the question, on the submit button it says "button", you can put "Go" or "Try", "buttons" looks like a false text. And to go from one day to the next (if you are successful), you naturally click on the screen, but I found that you have to press "Enter", if you want that the players do that they need to know it, or change it for mouse click instead of using the keyboard. The assist mode helped me in the final moments, so thanks for that, although not at all levels the highlighted elements have new info, but it helps. The last time I clicked in the bed I found the purple screen that said "Here should be the ending screen", so I guess that I finished the game haha.
The art is great, looks simple but nice, I realize that probably you have more than one artist because some of the pictures are as vector art and others look like painting, but they all go the same way so it's nice.
The music is great too! And the story! A very original form to use the theme, congrats :)
PD: Sorry for this long feedback, I hope some of this help to you :)