I saw it in the ep.02:

Ep.02 is about Hyakko antagonizing Tatsuki and not receiving any comeuppance (while they hop school clubs). I guess creators extracted wrong lessons from Tomo/Yomi and Konata/Kagami.

Then, I dropped the show. Nova carried it further, but the result is exactly the same:

Where Hyakko fails is the execution of certain character interaction. Remember Kana-Chiaki-pairing in Minami-ke and how some people were annoyed how Chiaki was being a flat-out bitch to her sister? Thought Tomo sometimes went a bit too far with Yomi? Well, Hyakko gives us impulsive, selfish Torako and pairs her up with a reserved and cool ojou-sama Tatsuki, which ends up in the former annoying the shit out of the latter. There’s nothing wrong with this on an ideal level, but what Hyakko fails at is staying within the limits of good taste. Oftentimes Torako’s actions are just plain uncalled for and mean, which doesn’t really amuse me - especially when the show lets Torako to get away with it.

You don't say.

Still, Nova ends his essay with this:

All this being said however, I still think Hyakko is worth watching.

Is it really necessary to sugar-coat the pill? No matter how you cut it, Hyakko is the biggest disappointment of the Autumn 2008 season. Sure, it's not the worst anime on the air, and therefore it may be worth watching... if nothing better is available. Like Toradora, for instance.