ヤングエース
A spin-off manga titled is illustrated by Puyo and started serialization in Kadokawa Shoten's "Young Ace" in July 2009. An anime adaptation by Satelight began airing in April 2015. A visual novel video game titled was released on May 12, 2011 by Bandai Namco Games for the PlayStation 3 and PlayStation Portable. The game's story takes place shortly after the events of the film.