Age: 11-12 (immortal)

Height: 141 cm

Weight: 37 kg

Weapon of Choice: Nietono No Shana

Contracted to: Alastor

Shana is a young girl with jet black hair which is almost as long as her entire body height. She also has dark brown pupils and a fair complexion. Because of the effects of being a Flame Haze, Shana's body age remains to that of a girl of 11 to 12 years old. Upon invoking her powers as a Flame Haze, her hair and eyes change color to a fiery crimson, with embers fluttering from her head down.

In her first few years as a Flame Haze, she wears an all-black attire consisting of a shirt, pants and her Treasure Tool Yogasa in the form of a trench coat. However, after she decided to stay in Misaki City, she is most usually seen with the Misaki City Municipal High School uniform and when in combat, has the Yogasa as a cape worn over her clothes.

She is later seen wearing a red-and-black frilly dress on her stay inside the Seireiden.

Initially, she is concentrated solely on her duty as a Flame Haze, not even considering getting a name as she didn't see any importance having it. She sees Yuji only as a Torch, an object, albeit marginally interesting because of his status as a Mystes. However, she slowly opens up to Yuji, coming to think of him as a person despite being a Torch, and eventually comes to show affection to him. Her duty made her indifferent towards human life at first, but through Yuji's influence, Shana has opened up slightly, although she still remains confused and disgruntled by some human traits which she considers as pointless, although some of it is used to mask her jealousy of her desired monopoly on Yuji.

Shana has a habit of saying "Urusai! Urusai! Urusai!" ("Shut up! Shut up! Shut up!") whenever Yuji asks her questions or makes remarks that disturb her original worldview or embarrass her. But in reality they really care for each other. She has a great fondness for anything sweet, eventually putting melon bread above her preference.

Shana is shown to be highly intelligent as she has gotten a perfect score on every exam and is talented in Physical Education. She is shown, however, to be naive when it comes to social affairs, once even unabashfully asking "how babies are made" to Chigusa.

Known only as the "Flaming-Haired, Blazing-Eyed Hunter," Shana bears no name until she meets Yuji, who names her after the sword she wields. As a "Flame Haze," Shana is sworn to protect the balance of the world by hunting down the "Guze no Tomogara;" monsters from the "Crimson Realm" who come to earth in order to harvest the "Power of Existence" from its denizens. Together with Alastor, "Flame of the Heavens" and Shana's guide who lives within her, and speaks to her through a necklace she wears, she has become one of the most powerful Flame Haze in existence.

Shana is said to be the most powerful, known and feared by most Crimson Denizens with her title alone. This has allowed her to defeat many powerful Denizens, and permits her many different abilities, including her proficiency with the Nietono no Shana, the ability to wield flames, manipulate the Power of Existence, harbor extrasensory traits, and fly with wings of flame. In the third volume of the manga, the first volume of the novel, and the movie, Alastor states that the reason why she did not explode after being shot by Friagne's Trigger Happy was because she held a capacity that existed in dimensional space, who was able to contain the Flame of Heaven's (and more); He has thus stated her as "The Great One".

However, she demonstrates a clear lack of experience in battle, as noted by Sophie Sawallisch, who has witnessed her fighting style first-hand.This is once responsible for her defeat against Flame Haze Margery Daw, who is a specialist in Power of Unrestraint.

Despite being the title character of the anime, Shana has few character relations with many of the characters in the show. That would be because of the manner she was raised. Wilhelmina, Shiro and Alastor mostly focused on her physical and mental being, forgetting that being as socially adept is as important. This was, as Alastor said, one of their mistakes, since they thought that they would just teach her these feelings when she grows up a little more, not realizing that these feelings should be developed, and could not be taught so hastily. (Although, Shiro did teach her indirectly that love is the most powerful unrestricted spell of all.)

Her main social interest is Yuji, whom she sees as her love interest. Her relationship with Yuji is one of the driving forces of the series. Shana takes orders and advice from the Crimson Lord she is bound to, Alastor, and has a mentor and guardian in the form of Wilhelmina Carmel. Kazumi Yoshida is her love-rival for Yuji, and Shana treats her with contempt and disdain. She generally treats most other characters with ignorance and indifference, with the exception of Chigusa Sakai, who she looks to as a source in answering certain difficulties when Alastor or Wilhelmina are unable to do so. Shana eventually starts to be more open to the other characters, especially in regards to her relationship with Kazumi becoming more friendly.

After meeting Yuji, Shana goes through a chaotic phase in she experiences new emotions like love, jealousy, hatred, and loneliness. This leads her to making rash decisions in battle as she's unable to identify or deal with what she's feeling. When Shana finally realizes that having Yuji with her in battle helps her fight better, she begins to unlock new abilities and becomes more proficient in battle.