"About Shakugan no Shana"
Another contribution from Mina.

Shakugan no Shana (Shana of the Blazing Eyes), also known simply as Shana, is a series of Japanese light novels and related media works written by Japanese novelist Yashichiro Takahashi and illustrated by Noizi Ito. An anime version was adapted by the animation studio J.C.Staff and contained twenty-four episodes. A second anime series was announced with the title Shakugan no Shana Second, which started airing in Japan on October 5, 2007.

Spoiler Warning!! [+/-] Show/Hide Synopsis...

Yuji Sakai, a high school student, expected his very normal life to last forever. However, this expectation is quickly shattered one day while on his way home.
The world suddenly freezes in time, leaving Yuji to watch in horror as blue flames engulf the people around him. Soon a monster resembling a large doll appears and begins sucking the flames into its mouth, until it notices Yuji. Surprised with Yuji's insusceptibility to the time-stop, it jumps with glee.
Just as the monster prepares to consume Yuji, a sword-wielding girl in black attire with flaming red eyes and hair that burns like embers appears, swiftly and confidently destroys the monster, before noticing Yuji moving freely. The girl calls herself a "Flame Haze" who hunts the "Denizens of the Crimson Realm" and the "Rinne" they send to do their bidding. When Yuji notices a blue flame in his chest, the Flame Haze tells him that the "real" Yuji died some time ago, and that he is a "Torch", a temporary replacement for erased humans. Torches take on the forms of those erased persons, but after a period of time, they will vanish from existence and the memories of the living. Unfazed by his apparent death, Yuji befriends the strange girl and names her "Shana" after her sword. Expecting Yuji to slowly fade away like all other Torches do, Shana is surprised to find that Yuji is not a normal Torch, but instead a special kind called a "Mystes": he has a treasure inside him, known as a "Hougu", a device possessing special abilities of sorts, and an extremely powerful and valuable one at that. Shana resolves to protect Yuji from the Denizens, who would use the treasure to disrupt the balance of the world, and Yuji decides to join Shana in her fight.
Shana's fight is actually a long-standing struggle between the Lords and Denizens of the Crimson Realm. The Denizens steal Power of Existence, the energy that forms the basis of the world, from living people and utilize it for their own selfish ambitions. Lords are the mortal enemies of Denizens, and utilize Flame Hazes to attempt to retain balance. Thus, the Flame Hazes create Torches in the image of the dead in order to relieve the strain on reality resulting from the actions of the Denizens.
During their time together both Shana and Yuji begin to realize that their affection for each other is more than just friends. During Shana's numerous battles with the Flame Haze she has come to realize that whenever Yuji is close and cares about her, her powers increase, thus awakening the Flame inside her.

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