I was not expecting much from this season, or this anime at all. Except for some action and fan service, even though there have been hints of some background story going on. However, it was pretty unknown to most viewers and fans. In High School DxD Hero Episode 2 we get a glimpse of hope.
High School DxD Hero
The Official Twitter account for High School DxD Hero (Season 4), Revealed the new season of the anime is set to air April 10, 2018, Alongside this announcement the official website revealed a new Visual/Poster for the series. While also announcing that the series will have a private advance screaming of the anime 1st episode
The Fantasia Bunko Festival 2017 event announced High School DxD anime will be receiving a 4th season. The series will be titled as High School DxD Hero and will premiere in 2018. The panel also showed the new visual for the anime, Which also revealed a new studio will be adapting Season 4. High School