​Age: 12 or 13 (immortal)​

Height: 141cm (4'8'')
Weight: 34kg​​

Seiyuu: Rie Kugimiya

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​Shana is a young girl with jet black hair which is almost as long as her body. She has an anime antenna hair which always sticks out on the top of her head and characteristics that would make her a Moe character. She also has dark brown irises and a fair complexion. Because of the effects of being a Flame Haze, Shana's physical age will remain that of a girl of that appears to be 9 to 13 years of age. 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. Shana is of Asian decent.

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Shana from Shakugan No Shana

​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".

​Unrestricted spells

Tenpa Jousai - ​is a secret technique inherited by Flame Haze of the title "Flame-Haired Burning-Eyed Hunter". Shana is capable of using it to summon Alastor.

Wings of Crimson - ​A pair of fiery wings appear on her back, allowing flight. At first, Shana is not able to use this spell without Yuji in range. Later on, she manages to use Guren no Souyoku when she fought in later battles even against Yuji. These wings were fast enough to evade Hecate's powerful Aster spell.

Great Blade of Crimson - It coats Shana's sword with a flame which she can use to hurl at enemies from a distance, whether as a wave of fire or fireballs. She is also capable of creating fiery constructs to do her bidding. Additionally, she has learned to summon the spirit of Tenmoku Ikko, the entity that resides within Nietono no Shana when she was held as a captive in Seireiden

​True Crimson - A unique Unrestricted Spell that forms a shape of a hand with flame. Its primary purpose seems to be to push back, and even defeat enemies.

Blazing Flame - A unique Unrestricted Spell that can provide a continuous stream of flame and long ranged attacks in air or on the ground. This spell is powerful enough to overpower the Treasure Tool Azure

Judgement - ​ A unique Unrestricted Spell that can be used to remotely observe areas from far away, broadcast speech over a wide area, determine the purpose of Unrestricted Spells, and sense Power of Existence in a large area.

​Condemnation - A unique Unrestricted Spell. Its primary purpose seems to be the destruction of obstacles, such as reinforced doors, structures, and destroying the enemy directly.