The story centers around Yoshino, an ordinary high school student with a mysterious friend named Mahiro. Mahiro made a deal with a witch named Hakaze to hunt down the killer of his sister. Now Mahiro is missing and Yoshino finds himself involved in crisis that may doom the entire world. Source: ANN Note: The first episode received an early screening at a special event on 29 September 2012 at all Animate stores (excluding Tokushima), all Gamers stores, and Comic Toranoana Akihabara Store B. The regular TV broadcast started on 5 October 2012.