Nishi no Yoki Majo

Firiel is a 15-year-old girl who lives with her father, the astronomer Professor Dee, and their servants, the Holys. When she is invited to a fancy ball at a count's castle, she discovers that her past is more complicated then she had thought. A necklace given to her by her father proves that she is of royal blood—and a candidate to be the next Queen!

(Source: MU)

Nishi no Yoki Majo was partially published in English as The Good Witch of the West by Tokyopop, who published the first six volumes from October 10, 2006 to May 6, 2008.