The Kurenai Ost by Muramatsu Ken is really beautiful. Yup. Here's my favorite piece. "Ie ni Kaerou" let's return home. or something like that.
never finished the anime. eh.
Here's the rest of the ost (playlist):
https://www.youtube.com/watch?v=qDrfqPDUnTc&index=1&list=PL4EDCF8279167AE1D