Honestly, I've never heard of this anime before. But I've gotta say, this Doujinshi is incredible!

This girl meets this guy (presumably another student?) and they, for no explainable reason, begin to have sex. This takes many forms, including ass-sex, and the whole thing ends with a climax. Straight-forward, but very well drawn, and impossibly good facial expressions!

I'm not going to be quite as generous as the previous reviewer on this one.

First of all, it's a group orgy with regards to Haruhi and Mikuru, and Yuki. I'm not entire sure which guys they're having sex with, since the faces of the guys aren't drawn in at all times. I do see Kyon and Koizumi, so I'll assume at least 2 of the guys are them. I'll agree that the facial expressions are very erotic, but I'm docking marks for the fact that some of the faces don't really look close enough to how the actual characters look at times. Also, proportions, while fine, seem just a little off in one or two panels. A minor gripe.

How the heck did it get ranked for 5 for story though? There isn't too much in terms of story, just a group orgy.

Summary
art: 3.5-4, with a greater leaning towards 3.5 for previously mentioned gripes
Story: 2.5. Nothing that's too boring, but nothing particularly interesting.

Overall: 3-3.5, giving it a 3.5 because it's above average.