Besides the creepy ambient track "Lost in The Dark Woods," this original soundtrack is composed of only piano music, which sticks to emotional, melancholy, and romantic tunes mostly. They're fairly easy on the ears and I'd even recommend a couple tracks for studying with. And out of the four heroine's themes, my favorite is Fuyuko's Frost Lullaby.
Great soundtrack for studying and writing stories to! Good job, Kwatsu!