Full Scan (beware: LARGE image)
Arcueid is described as the main heroine of Tsukihime. Aside from her own route in the game, she is the character with the largest role in a route not her own, that of Ciel. However she makes nearly no appearance in Akiha, Hisui and Kohaku's routes, while Ciel does make some limited appearances.
Arcueid is shown to be a whimsical individual who, although knowing the basics of the modern era, does not seem to know about social norms. Once, she shows up at Shiki's school and waves to him from the school rear courtyard, luckily for Shiki only Ciel spots her. Her behaviour is almost child-like, due to the lonely nature of her up bringing, although she is over 800 years old, she spent most of it asleep and knows nearly nothing about the world or how to interact with others. As she works together with Shiki to stop Roa, she gradually begins to enjoy life and starts to like Shiki as more than just a friend.
Ah, yes. The lovely Arcueid. I remember when I first watched Tsukihime and wasted no time falling in love with her character. She was quite the interesting woman who was almost always cute as a button when it came to adapting to the norms of society. That was one element that made her interactions with Shiki a ton of fun to watch.
While she is beautiful in all of her appearances (even in her yellow-eyed form) I much prefer her with her long hair over the short hair. I think it especially compliments her beauty when she is seen in her gown (pictured above). As for her eyes, either color (red or yellow) is just fine with me. Oh, and lastly I can't forget that she is kickass when it comes to fighting. There's not a lot of it shown in the anime but nonetheless she can definitely hold her own against whoever the opponent may be all while looking elegant and sexy without one disruption. ^__^
-- Leon loves you, Arcueid.