 The manga also began serialization on the digital "Shonen Jump Alpha" from July 9, 2012.A spin-off manga written by Akihiro Tomonaga and illustrated by Wedge Holdings, titled , was serialized in Shueisha's "Saikyō Jump" magazine from April 2012 to April 2014.The anime was first teased on December 9, 2010, revealing details would be unveiled at the Japanese encore screening of "" on February 20, 2011.