Writing for CJ's operation, Nameless makes a risky bet:

In my opinion, the shows only interesting character thus far is Hitoha. By the end of the episode I felt that whenever she was in a scene a laugh was sure to follow, which is something I couldn’t say for the other two sisters. In addition to the Nipples scene, it was her deductive reasoning that started the girls’ quest to deprive Yabe of his manhood. While her comedic timing was certainly top notch, she also seems to have the most potential, plot wise, for the rest of the series. The most poignant moment of the show, though it wasn’t really funny, was when she asked for her friends to stand up and no one did. If I was a betting man (which I am), I would bet that she will make some sort of friend by the end of the series.

I strongly suspect that any kind of "plot" is unlikely, given how many extra characters are going to be trotted onto the scene. Granted, she is the best-fleshed character of the tree leads. I mean, the dark girl is showing a human side in the first episode? Took Sakaki-san 17! It is too easy to predict a Chiyo-chan for Hitoha, but far too early. And it is not that kind of show.

BTW, in an apparent subversion of the stereotype, Hitoha is not unduly intelligent. Observe how she mistakenly writes "丸丼ひとは" (Hitoha Marudon) instead of 丸井ひとは (Hitoha Marui). I am sure she didn't do it on purpose...