This special episode acts as an alternative version of the final four episodes of BorN , helping to realign the anime's timeline more closely with the original light novels.

A special story distributed with the BorN Blu-rays that offers a glimpse into a potential future involving Issei and the heroines' children. Season 4 ( Hero ) Extras

If you're watching for the , most of the short specials can be skipped as they are purely for comedy. However, the full-length OVAs and the Hero: Taiikukan-ura no Holy special are highly recommended. The latter is especially critical for those confused by the changes made during Season 3, as it helps bridge the gap to the more faithful Season 4 adaptation. How To Watch High School DxD in The Right Order!

The extra content is generally divided into three categories: standard OVAs (which usually act as "episode 13"), short DVD/BD specials, and specific alternate-story episodes.

Bundled with DxD DX.2 , this episode follows the BorN season.