Shakugan no Shana X Eternal Song
Installed in the sixteenth century in Europe, it covered the stories Shakugan but Shana. In the world where the seals did not exist, a great war broke out between the flames hazes and the bugger denisenes. The story focuses around Matilda Saint-Omer, the former "hunter with burning eyes with burning hair" and reveals the details that were not explained in Shakugan but Shana.