Shakugan no Shana T2 E21 – Combined Strength
Wilhelmina struggles against Sabrac who appears to be invincible. Yuji gathers Shana, Margery, Kazumi and Keisaku, and devises a plan to defeat Sabrac. They are successful in severing his energy reserves while Wilhelmina distracts him, and without Power of Existence to draw on, Sabrac loses two more swords and finally falls to Nietono no Shana.
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.