Shakugan no Shana T3 E17 – For Whose Sake?
Shana makes it to New York, and meets up with the rest of the gods of Earth. They agree to help Shana fight, and she then explains the plan to them. Yuji visited Misaki City and found Kazumi Yoshida and Eita Tanaka. He came back to convince Yoshida to join him in building the new universe. While Yoshida, Tanaka and Yuji walk around town, Yuji explains his what he intendes to do. After a while of explaining, Yoshida finally agrees to help him.
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.