First of all, I'm serious: I think the creators of the anime love Kaname more than Zero. It's quite obvious from the beginning that the love triangle is KanameYuukiZero, then why does Kaname present in YuukiZero scenes? In those scenes in the manga he wasn't even there at all O_o And there are more.
The story of course is great, but the anime ruined it totally. Zero behaves like a wimp, he's not like himself, and Yuuki also. Since when Yuuki has been taking Zero's insults seriously? I won't tell spoilers but the anime exposes things very fast. Things that were clear at chapter 34 in the manga were hintend at episode 5 for example and in the opening and ending as well. The animation is so poor, and the art that is absolutely amazing in the manga is ruined in the anime. But I love the seyuus, they are awesome and as well the opening theme and the ending theme (not their clips, only the songs).
I really hoped that the anime of my favorite manga would be awesome, but I guess I was mistaken. Did I have high expectations? I wonder...
