That's what I got from it too. This isn't 4-chan's typical "lololol animu" that most people expect it to be, somebody actually put a lot of thought into making this into more than just a joke. Rather than being a parody, which is what it seems to have started out at is, everything is taken seriously, even if it does have its share of humor, and it strives to build genuine emotions, in part by putting you inside the head of a "normal kid" who's suddenly stricken by heart disease.
I won't retread the areas tehjaybo already covered, since he covered them fairly well. Well, I might. Anyway, the main point of this game seems to be that people who have physical problems want to live normal lives and are often no different in their attitudes and desires than people who are perfectly healthy. The game does drift a bit from its point by having the female characters, even those with more obvious physical disabilities, still appear as cute. Their designs are basically standard dating sim designs with burn scars or stubby arms, which is a bit disappointing but not unexpected.
There are some quirky characters among the bunch, although they still fall within the standard parameters for a typical dating sim cast. However, it doesn't seem to go to the joke character well and, although some characters have only gotten short introductions so far, none of them come across as being seedy. Lack of seediness actually permeates this game as a whole, though I can't guarantee that holds true for the rest of the game.
Backgrounds are static photos covered in a few Photoshop filters, nothing amazing but they get the job done. The music actually seems a bit better than the annoyingly chirpy tunes that a lot of dating sim-type games seem to have. Character designs are standard anime, nothing exceptional or new here unfortunately.
On the whole, I expected much worse things from this game. It's reasonably well-written, has characters that aren't just digital representations of different player fetishes, and it actually TRIES to take its subject matter seriously.