Yeah, everything you said about him being basically a really decent, iealistic guy who is a cop because he wants to protect people. I thought it was very apt when Ozawa told him that the only pure people she knows are him and Shouichi, because they've both got that. The difference is Shouichi DOES have the special super powers to help him, and HIkawa has nothing but his determination and will to do good.

I find HIkawa's pride and stubborness really interesting too, because he's really really self-effacing and is always making light of his own heroicness... but then certain things happen and let you that he does have that pride underneath it all that he robably squashes (sometimes) on purpose. But the thing is that he's not proud and stubborn for his own sake, for his own ego's sake, instead he's pride has more to do with the ability of being able to protect people and do good, you know?

And about Hojou... yeah. He's basically one of those guys that thinks that the fact that his motivation is in the right place (he does ultimately mean to protect humans) and that as a cop he's got the authority to take certain actions to ensure that protection mean that... he's got the right to use ANY method he deems necessary, and that he can step over anyone he needs to, for the sake of his ultimate goal. So he's understandable and he's a pretty good, complex character... but an asshole. :D