Overture (Part 1)(オーバーチュア 前編Ōbāchua Zenpen) is the third episode of the anime series Shakugan no Shana S. Taking place prior to the start of the Shakugan no Shana series, Shana travels to a city in search of a Denizen who steals humans to complete his form. In her pursuit, she takes the identity of a Torch and lives the life of a person who no longer existed...