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.Shakugan no Shana featuring Satoshi Hino and Rie Kugimiya has one or more episodes streaming with subscription on Funimation, and available for purchase on iTunes. It's an animation and anime show with 73 episodes over 3 seasons. Shakugan no Shana is no longer running and has no plans to air new episodes or seasons. It has a better than average IMDb audience rating of 7.1 (958 votes).