Shakugan no Shana

You can watch Shakugan no Shana on Hulu.

Is Shakugan no Shana on Netflix? No, this show is not available on Netflix in the US.

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.

There are 72 episodes and 3 seasons of Shakugan no Shana.

Yes, Shakugan no Shana series is finished. 3. season was the last one.

Shakugan no Shana cast is including:
Satoshi Hino as Sakai Yūji (72 episodes), Rie Kugimiya as Shana (72 episodes), Masashi Ebara as Alastor (72 episodes), Hitomi Nabatame as Margery Daw (72 episodes), Mitsuo Iwata as Marcocias (72 episodes), Mamiko Noto as Hecate (72 episodes), Kenta Miyake as Sydonay (72 episodes), Junko Minagawa as Khamsin Nbh`w (72 episodes), Shizuka Itoh as Wilhelmina Carmel (72 episodes), Ayako Kawasumi as Kazumi Yoshida (72 episodes), Tomo Sakurai as Sakai Chigusa (72 episodes), Hirofumi Nojima as Ike Hayato (72 episodes)

Both Shana and Kazumi stand at their respective locations waiting for Yūji to meet with one of them, only to discover that Yūji has disappeared, with not even the slightest evidence of his existence left behind. All is not lost however, as the letters the two of them sent to him still give hope of Yūji's continued existence. As Shana and company search for answers on Yūji's whereabouts, they soon find the truth staring back at them when Yūji reappears in front of them as the leader of Bal Masqué. Left with little choice, Shana must now confront her most unlikely adversary on the battlefield in her most difficult challenge yet.