You can watch it on Veoh TV. You have to download the
application, but it's free and doesn't harm your computer. There's
a LOT of anime on Veoh TV, and the quality is quite good, if you
download each one and delete it afterward (instead of allowing the
video to stream).
They also have it on Anime Season. Both seasons as well as all
the episodes are up online.
http://www.animeseason.com/saiunkoku-monogatari/
http://www.animeseason.com/saiunkoku-monogatari-2nd-series/