Shakugan no Shana is a Japanese light novel series written by Yashichiro Takahashi with illustrations by Noizi Ito. It follows the story of Yuji Sakai, a high school student who discovers he is already dead and encounters Shana, a Flame Haze. Together, they battle against the Crimson Denizens who consume human existence. The series blends action, fantasy, and romance elements, captivating audiences with its unique world-building and intense character development.