The Good Witch of the West (Japanese: 西の善き魔女, Hepburn: Nishi no Yoki Majo) is a series of fantasy novels by Noriko Ogiwara, published by Chuokoron-Shinsha.

The series has been adapted into both a manga series and a thirteen episode anime television series subtitled Astraea Testament broadcast in Japan in 2006. The story revolves around a fifteen-year-old commoner who discovers that she is really a princess. The manga and novels were licensed for English language releases in North America by Tokyopop. After Tokyopop went out of business JManga began translating the manga and has progressed farther than TokyoPop did.

Firiel Dee is given her mother's necklace by her childhood friend, Rumpelstiltskin (Roux). The necklace was meant as a birthday gift from her remote father, the astrologer Gideon Dee. All fifteen-year-olds are welcome to attend a public ball at the royal Roland castle in honor of the Queen's Birthday, and Firiel decides to wear her new necklace to the celebration. When it is recognized as a missing talisman of the royal family, this leads to the revelation that Firiel is the daughter of royalty and automatically in competition to become the next Queen.

Firiel Dee (フィリエル·ディー, Firieru Dii)

Voiced by: Fumiko Orikasa

The main protagonist, Firiel is taken care of by Mr. and Mrs. Holy because her father never leaves the tower, the lab in which he and Roux study. She becomes recognized as one of the candidates for the Queen's position and finds out her mother was a famed member of the royal family.

Roux Liskin (Rumpel Stiltskin) (ルー·ルツキン, Rū Rutsukin)

Voiced by: Hiromi Hirata

Firiel's childhood friend as well as her father's student and assistant. He protects Firiel throughout the series and is obviously enamored by her. In the start of the series, Firiel looks at him more like a little brother, though they later develop a serious relationship. His past is troubled and shrouded in darkness as he later tells Firiel that he cannot be with her for that reason because to him she "shines like the sun itself". In the anime, they both end up returning home as a couple. Adale writes that Firiel, as a candidate, was the one who chose the most happiest life, because she lives in the place she loves with the person she loves.

Adel Roland (アデイル·ロウランド, Adeiru Rōrando)

Voiced by: Chiwa Saito

A candidate for the Queen's position and a princess of the Roland family who becomes one of Firiel's friends. She is a fantasy author whose stories often include yaoi pairings inspired by Roux and her brother Eusis.

Leandra Cheviat

Voiced by: Rie Tanaka

Leandra is a candidate for the Queen's position and a princess of the Cheviat family. She is also the headmistress of a school for girls so that she can maintain her high status and reputation. She is the archnemisis of both Firiel and Adel, as she sees them as threats to herself and her position. She tries to seduce and blackmail Roux, but is unsuccessful. Though she may seem like a bad person, she is in fact loyal to her country.

Ravenna

Voiced by: Kaho Kōda

Firiel meets Ravenna at the school for privileged girls. Ravenna is the leader of the group that controls the school. She is Leandra's right-hand man. She is one of the best sword fighters in the school.

Ingraine

Voiced by: Mitsuki Saiga

Ingraine attends the same school as Firiel, where her sword fighting skills are rivaled only by Ravenna's. She agrees to train Firiel for her duel with Ravenna to avenge her friend Roselitte, who she believes was killed by one of the girls in Ravenna's faction. Later in the series, she is seen fighting dragons side by side with Eusis, for whom she has developed a romantic attachment.

Gideon Dee (ギディオン·ディー, Gidion Dii)

Firiel's father is a scientist and researcher who took Roux in as a student. Firiel thinks that he cares more about his Roux than her. It is revealed that he helped Duchess Edilin escape from the palace and married her.

Tabitha Holy (タビサ·ホーリー, Tabisa Hōrii)

Voiced by: Yoshino Ohtori

Mrs. Holy takes care of Firiel before she lives in the palace; she appears throughout the series and helps Firiel.

Bo Holy (ボゥ·ホーリー, Bō Hōrii)

Voiced by: Hiroshi Naka

Mr. Holy took care of Firiel along with his wife. He dies trying to save Firiel and Roux from members of the Snake Rod.

Marie

Voiced by: Ayumi Fujimura

Marie is Firiel's friend from the village who often calls her "fairy girl" because of Firiel's fanciful nature. She becomes close friends with Adel as they both try to persuade Firiel to marry Eusis.

Eusis Roland (ユーシス·ロウランド, Yūshisu Rōrando)

Voiced by: Kishô Taniyama

Eusis is Adel's older brother, who also protects Firiel in the series. Eusis is considered to be Roux's rival for Firiel's affection. He proposes to Firiel on several occasions and eventually is rejected.

Lot Chrisbard (ロット·クリスバード, Rotto Kurisubādo)

Voiced by: Akira Ishida

Eusis's close friend. He often teases Eusis about his growing feelings for Firiel. He is cunning and manipulative.

Bard

Voiced by: Teruaki Ogawa

A mysterious minstrel with magical powers and close guardian to the queen of Gulair.

Edilin (エディリーン, Ediriin)

Edilin is Firiel's mother. She was a duchess of high standing in the royal court and a candidate to become the next queen of Astrea. She disappeared along with her touchstone, a very valuable neckless now in Firiel's possession. Adel and Eusis recognize the necklace from a picture on the wall of their father's study. She is seen in flashback to have been very similar to Firel - a smart, somewhat rebellious young woman who was willing to throw away everything for love. After running away, she changed her name to Yuna (a feminine alter-name for Astrea which means "my one and only").