Really neat, I enjoyed playing through it!
The art is very nice and I enjoyed the use of color too.
After playing through, I loaded it up again and saw that there was a coffee shop to the right (I totally missed this the first time). After that I went through and explored all of the options.
In the case of missing the coffee shop, I was wondering how it could be communicated if a wall is truly a dead end or an entrance to the next scene. I noticed the nice rounded edges on the border of the rooms, maybe the walls that lead to other rooms are a straight corner and the dead ends are rounded off?
Also, I didn't realize the first time playing through that I could exit the main part of the library and return to where I started. The second time I realized that I needed to walk down to exit, but the first time I saw the space for the door there, I assumed it was a shadow of the door on the other wall that leads to your friend that you can study with. Maybe an offset of these too doors would help that?
Lastly, I thought it would be cool to check the time mid game, whether it's always accessible via a pause menu or you need to unlock it (perhaps by spending an hour shopping?).
Overall, really neat game! I love seeing games with a lot of personality and character to them :)