Geneon
, with subtitle is a Japanese original anime television series produced by C-Station and NBCUniversal Entertainment Japan. It aired in Japan starting from 5 October 2015 to 16 September 2019. It has generated 3 anime seasons, 2 OVAs, a stage musical adaptation, 2 manga adaptations, 2 radio programs, multiple musical song CDs and drama CDs, as well as a variety of related merchandise and collaboration. The franchise also got a sequel stage musical in July 2018 and a new OVA project on October 24, 2018.