You know, you should buy the manga where Shuichi doesn't look like a twelve-year old girl (and, from what they tell me, doesn't suffer from an extreme lack of spine). Plus, Tatsuha with his hair bleached and the loveliness that is Yoshiki Kitazawa. You don't want to miss out on that, I promise.
... yeah, I'm still scared of pink!Shuichi. But really, if you want more Gravitation, get the manga. The artwork might not be anything spectacular, but it's one of very few comics I know about that manages to be ridiculously silly and touching both at once. And, the angst never decends to the wangst, which really is something to be impressed with, all things considered.
And from what little I've seen of the anime, Ryuichi is actually SOMEWHAT more normal *g*