The first anime adaptation premiered in Japan in 2012, and the second series, High School DxD New, premiered in July 2013.
Author Ichiei Ishibumi and illustrator Miyama-Zero’s High School DxD light novel series previously inspired three television anime series.
A panel at the Fantasia Bunko Festival 2017 event on Saturday announced that the previously revealed fourth season of the High School DxD television anime series is titled High School DxD Hero.
The third series, High School DxD BorN, premiered in April 2015.