I just love otaku manga, and for the first chapter or two this is one of the most enjoyable I've read. There's something for everyone. Shoujo fans will love it. Shonen-ai and boy fanservice fans will love it. Moe and ecchi fans will love it. There's even stuff for yuri fans. The people who will like it most of all, though, will probably be fujoshi that tend to fall in love with other fujoshi. You will fall in love with adorable, strong-minded, talented, and very perverted Rumi. You'll want to be her best friend (and if you want to be more than her best friend, there's plenty of panchira and bloomer shots of her to keep you happy). ^^ Plus, Fujoshi Rumi is hilarious in a great otaku-manga way.
This is a seinen, though, and it's so fanservicey it verges on being ecchi. Although it's written by a woman, it's written by a woman that writes hentai, not yaoi. This is actually a manga written for guys that like the new 2D fetish that's becoming popular among otaku, fujoshi moe. This intention gets more and more obvious as the series continues. In other words, it isn't written for fujoshi. But fujoshi will probably like it anyway. Especially the type of fujoshi I am, who quite likes ecchi anyway.
So here's my opinion. Read the first chapter or two if you're a fujoshi, because those are the chapters that are pretty light on the girly fanservice and are told from Rumi's POV. Read the rest only if you're in it for the ecchi.
(The translation is a little iffy in parts, especially when it comes to colloquialisms. They translated a Japanese saying as ... "brothers before whores." Nobody's ever heard of "bros before hos"?)