Hunter × Hunter: Phantom Rouge
"Hunter × Hunter" creator Yoshihiro Togashi wrote the two-part manga to act as a prequel to the film. A collected version of the story, referred to as "Volume 0" of the series, was given to the first million moviegoers. A light novel adaptation of the film was released by Shueisha on January 15, 2013.
Is It Wrong to Try to Pick Up Girls in a Dungeon?: Sword Oratoria
A manga adaptation of the side story light novel series, titled "Is It Wrong to Try to Pick Up Girls in a Dungeon?: Sword Oratoria" with art by Takashi Yagi, began serialization in Square Enix's "shōnen" manga magazine "Gangan Joker" from May 22, 2014.