Shakugan no Shana T3 E8 – The War Begins
As the war begins all over the world, Yuji, the Trinity and other Denizens are on the path to Snake of Festival's self. All Flame Hazes prepare themselves for the war, Carmel goes into the sea to the fallen kingdom and requests the help of Shiro. Khamsin and Rebecca infiltrate the Serei-den and start attacking and destroying everything. Meanwhile, Shana is alone and with no powers, when she notices what's going on and then she takes the swords in her room in preparation to fight.
Shakugan no Shana
The world has become a slaughtering ground for the Crimson Denizens, mysterious beings from a parallel universe who thrive on the life energy of humans. These merciless murderers only leave behind scant remainders of souls called "Torches," which are mere residues that will eventually be destroyed, along with the very fact of the victims' existence from the minds of the living. In an ambitious endeavor to put an end to this invisible, hungry massacre, warriors called Flame Hazes relentlessly fight these monsters. One fateful day, Yuuji Sakai ceases to be a regular high schooler—he becomes trapped in a crevice of time and is suddenly attacked by a Denizen. Coming to his rescue just in the nick of time is a nameless hunter who seems no different from an ordinary young girl except for her blazing eyes and burning crimson hair. However, before Yuuji can learn anything more about his situation, he discovers that he has already been reduced to a Torch—merely a scrap of memory waiting to be extinguished.