I just finished the anime series, but I forgot there are yuri in there until I watched it in episode 11(?) despite I have finished the visual novels quite some time ago. I think I like the pairing, and even the anime casts/crews agree by putting the ED referring to them.
I think Amane’s route have most episode compared to any other routes. Good job, since I think of her route (the ending in visual novel) showed that Amane is the strongest in willpower. I prefer how story told in visual novel, but I heard it is better in the manga adaptation.
But let’s come back to what really important. The yuri undertones start. 😛