The second problem with the pacing is with the characters themselves. Since there are only a couple scenes with each one, that means they fell in love over just a few interactions. I know this may be common in romance games, but it's still way to quickly for anyone to fall in love after talking with someone 4-5 times.
And finally, Callie being a book sprite is something I think should have been explained in the beginning, because it would have helped introduce the presence of fantasy/non-human characters in the game.
The other parts of the game are fine. The writing is nice(though I think I saw a few errors here and there), and the illustrations really add to the game as a whole,
[2/2]