Ayu has the 2nd Most Wanted Face

[Grantith]

Mimika, I'm pretty sure that's the traditional Chinese. 'cause that's not how Ayu writes her name in Japanese.

No one really knows for sure why she goes by "Van." She writes in her name Kanji as "Ban" (like nmskalmn showed). So it might just be 'cause the "V" is not a traditional Japanese sound so she uses it to make her name cool and interesting sorta. Like Ayu writes "Ayumi" in hiragana. Traditionally it would be in Kanji, but she writes it in Hiragana to make it different or cool.