Yuuki :: Long or Short Hair?

[[Hatsuki]]

I like both, the cheerful short hair and the more mature long hair. They both look great on her and shows her changes in the story.  

[Game Plushie]

I'd say both as well. She grew longer hair when she transformed into a vampire, that is why she was more cheery when she had short hair. As it said in the manga "I'm not the Yuuki that Zero knows anymore... because... the vampire side of me ate the other part.", obviously said by Yuuki which you can tell she has changed. I love the long hair because it resembles her mother, that gave up her life for her child.  

[Nana Shinu Ai]

is that true in all but yuuki doesn't have personality as her mother she was strong compare to juuri her mother