Maoyū Maō Yūsha (lit. Demon King and Hero), also known as Maoyu, or Archenemy and Hero in English, is a Japanese light novel series by Mamare Touno that was initially posted in a play format on the textboard 2channel in 2009. Enterbrain published five main novels in the series, in addition to three side-story novels between 2010 and 2012, selling over 450,000 copies in total. It has received several manga adaptations. A 12-episode anime adaptation by Arms aired in Japan from January 5 to March 30, 2013. The series follows the exploits of a human hero and the queen of demons who join forces to bring peace and prosperity to their war-torn world.