Hello again,
Like I mentioned on the Fortune Arterial review there is another erogè called "Yosuga no sora" that I played long ago. It was adapted also to an single cour (12 episodes) "anime".
I'm not gonna do a full review (there are others on the net about it), but a quick impressions overview. Here's the synopsis :
Tragically orphaned by an automobile accident, the Kasugano twins travel to their grandparents' countryside residence via railcar, hoping to reconstruct the shards of a shattered life. With an uncertain future, Haruka Kasugano clings to memories of the past, hoping to find the strength he needs to protect his ailing sister. With a destiny irrevocably tied to that of another, Sora Kasugano clings to moments of the present, drawing comfort and security from the company of her brother. Two lonely souls so physically alike, yet spiritually divergent, unaware of the challenges these conflicting expectations will unveil in the days to come.
First of all, the designs are top notch. I'm basically in love (yeah i say this often, but it's hard to maintain an harem otherwise 
) with Sora... (the little sister of the protagonist).
...but please don't expect to get a good story from either the erogè OR the anime. I started reading the erogè full of hope, but ended up with a semi inconsistent story, full of H-scenes that pops out of nowhere for no natural reasons. (I mean they start knowing each other by H? And the rest of the romance?!)
Yes, I said "anime" in start for a reason. It was just a crappy patchwork of all the routes (all within 2 episodes with time reverse after that) filled up with censoring and H everywhere. I was like "how this got into the TV"?
Nevertheless I quite appreciated the designs and the voiceover of the characters, even of our permanent harem builder Haruka was quite funny to watch.
Another good note is the ED of the anime named Pinky Jones of Momoiro Clover. It was pretty catchy and fun to watch 
Concluding, don't go watching/reading this one if you are in search of a good story, but if you're searching for some nice drawed girls and a harem builder boy...then yes Yosuga no Sora may be for you. 
See you later,
feal87