Ooh, this I like. I'll have to orient all my characters though. I can tell you that Minako's probably damn close to Nitori's rating.
Sure, she's neutral towards them, and occasionally gives shelter to the occasional traveler, but she is a Youkai of some power, with all that entails. (Haha, 'tails'.)
After all, she's a rather Youkai-ish youkai, so she has her own fits and quirks. You can't fool yourself into thinking that she runs on the same thought trains as a human. (Unsurprisngly enough, the same can be said of yours truly.)
Hibiki's pretty much roomies with Okuu in the Unknown/Unknown department. Given how the only humans she's had contact with at all are Sakuya and Marisa.
And, in the words of da Orkz, "dey ain't 'xactly normal 'umies."
Suzu...Well, she's pretty much roomies with Hina and Murasa. She's not exactly friendly in general after all.
And the Spider I'm working on...Well, let's just say that she's on the same register as Yoshika and Satori(Oddly enough, I always saw Satori as more the mildily anti-social sort, due to her ability.).