So I happened to be looking it up and apparently there's streams for the anime:
http://www.animenewsnetwork.com/video/9457/#play-1
The anime seems much better. It fixes some of the problems with the pacing, it just seems much more interesting in this form. Plus the dad's voiced by W's Memories/Captain Zaraki. The only thing that seems weird is that Kirino's hair is so light that it looks almost blonde. I do like that you see less of her one fang SD forms that appears a lot in the manga. For some reason I don't like that. Edit: Also, Tamura Yukari plays one of Kirino's friends. Awesome!
The one thing that confused me when watching this is that they mention something called Garagee which I think is short for Galapagos Games or cellphone games since Galapagos is a brand of cellphone in Japan. I think? There's a lot of terms that aren't explained, but that's what makes it kind of a quaint study in Japanese culture
Turns out I misheard it. They were saying GaruGee, for Gal Games or games for girls. Thanks to SpinelSun for correcting me on that
Episode 3
Spoiler
The fight between the dad and the children in the anime seems a lot more subdued. In the manga, it was super intense. I can understand why that wouldn't transfer as well in an animated form with actual voices. But yeah, this is around where in the manga that the story got interesting to me. Maybe it was because seeing the brother take the stand for the sister was impressive
The music is pretty catchy too
I don't really have time to follow many anime series nowadays, but this was kind of amusing
Edit:
Episode 5
This was a pretty good episode. Kind of reminds me of Densha Otoko since the sister is forced to deal with her hobby versus how society views it. Basically her best friend discovers her hobby and they have a falling out over it. The episode deals with this conflict. I thought it was more interesting than the father scene because it was a much more complicated situation. I kind of feel like people might enjoy this episode even if they haven't seen the first four episodes
http://www.animenewsnetwork.com/video/9851/#play-1
Edit Edit:
So I finished the series, and it was pretty enjoyable. I really liked the brother being the straightman to all the crazy girls around him. Kuroneko was really cute, she had a soft voice, but usually had stinging commentary that made her really funny. Plus she was a good foil for Kirino. I'm kind of sad that we didn't get to see more of Saori's background. It seems like they gave us a glimpse without letting us know anything else
Towards the end you can really tell that the anime was becoming kind of aware of itself, which it utilized very well. Like with the anime creation episode, you can't help but wonder how much of this was inspired by the actual anime creation. And then there's the aspect of the story starting to really reflect eroge. I commented near the end "The brother could have any of the girls in this series" and sure enough in the second to last episode, nearly all the girls end up calling him some version of "oniichan" at some point. It's like "Oh yeah, the writers know what this story is about"
It's kind of weird, it doesn't seem like there was any major conflict or anything, it pretty much ends
Spoiler
the same way it starts
As for the quality of the subs? I definitely have some nitpicks. Like there are honorifics used, but towards the end the -san and -sama aren't used. And Saori's -shi isn't used, even though there's a funny sarcastic line where the brother refers to her as Saori-shi in a mocking way. They use eroge, but there's one instance near the end where they use erogame, I dunno, maybe people were complaining it wasn't obvious what those were? And there was weird formatting issues, like some lines would clash and be bumped up unnaturally. Or the karaoke would break up words in weird places, it almost seemed arbitrary. And in the last episode, all the two line subs had an extra line between them. As sloppy as that was, it was free and it's not like it was unwatchable for it. If they released a DVD with subs like this, I probably wouldn't buy it though
But yeah, it's a cute and funny series. You can watch it for free, so why not, right?