Speaking of soundtracks, I listened to these while reading the manga. Source is vidya, so you may disregard this, but I felt they set a great mood.
For the spring/summer chapters: https://youtu.be/fr1uU9iKRZk
For the winter chapters: https://youtu.be/cANh9TZGalM
I'll have to go through all the tracks on the OSTs one by one after finishing the anime before choosing a favorite.