Story - When I got this anime, it was on bakabt as a freeleach, and I had downloaded it as fluff for my seed/leach ratio. However, I got bored and decided to give it a try. From the description I read of the series, it sounded like the plot was a group of students making a porno. Fortunately (or unfortunately, I'm not really sure anymore), it is not. The story revolves around Taketo Akutagawa, a genius adult novel writer, and several other genius students at his school Boobs. Lots and lots of boobs, and panty shots. This is essentially all this anime is about. It begins to have a plot similar to The World God Only Knows, saving his classmates from their inner selves, but you come to realize it's just to set up a love triangle (which is very poorly done). At this point, the story focuses on the relationship between Taketo and the female lead and her love rival. Now the story is still saveable and could have been a 7 or 8 still, had they decided to put any effort into developing the relationships between Taketo and the two girls. Instead, they just add a lot of boobs. The rivalry between the two girls is so weak, it's just plain pathetic. Fine, whatever, there's still the female lead that they can concentrate on, but no. Instead, they give you a halfassed, confusing, and frustrating (Taketo is dumb as hell) love story. It progesses very slowly into...nothing. Literally nothing is solved at the end. After the last episode concluded, I stared at the screen for a good two or three minutes wondering, "Is this it? Was that seriously the end?! What the hell?!" Also, Taketo's constant nosebleeds got very old after the first episode. Perhaps there will be a second season where they can wrap up the hundreds of loose ends from this season, but I doubt it. If they do, they better damn well have as cute an ending theme as this season did.
TL;DR: The story sucks ass and has horrible, overused, and confusing plot devices; but if you just want to see boobs, this anime is for you.
Animation - Nothing really special here, just your average, run-of-the-mill 2011 graphics. The girls are cute and are well drawn, even in their birthday suits. And thankfully, not all of them have boobs larger than watermelons, though there is an excessive amount of bouncing. Also, the ending credits are cute.
Sound - The saving grace of this anime, and I've said it three times now, is the ending credits. They are DAMN fucking cute. I never skipped them. On a different note, all of the sound effects and character voices are well done in this anime. I particularly liked the fortune-teller girl's voice and the scientist girl's lisp.
Characters - The characters in R15 are really well done. They had so much potential for expanding on the lead/semi-lead characters' stories. I would have liked to see them take more time into this anime and have actually followed through with some of the story arcs, but alas, I've already covered this in the story review. If only...if only...
Overall - I love boobs, don't get me wrong, but this story had WAAAAAY too many boobs and not nearly enough story. Or, in reality, it had just the right amount of boobs, just not enough time and not enough episodes. It's worth a watch, just don't expect much
For those of you thinking about watching this series, do yourself a favor: watch this 12 times and then say you've seen it. This explains more, wraps things up better, and has a better story than the actual show