While the high-octane battles and supernatural politics of High School DxD draw fans in, the series' many offer a lighter, often more fanservice-heavy look at the Occult Research Club's daily life. These bite-sized adventures, often bundled with Blu-rays or light novels, provide everything from character backstories to purely comedic, non-canonical "what-if" scenarios. A Breakdown of the DxD Specials & OVAs
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! High School DxD Specials
Bundled with the DxD DX.1 light novel, this episode features a bizarre conflict involving a perverted former priest and a "bra monster" that the club must defeat. Season 3 ( BorN ) Extras While the high-octane battles and supernatural politics of
Bundled with the Hero Blu-ray, this provides the origin story of how Sirzechs and Grayfia met during the Underworld's civil war. The "Must-Watch" Verdict However, the full-length OVAs and the Hero: Taiikukan-ura
Similar to the Season 1 shorts, these are 3-minute clips often featuring domestic or humorous moments, like Grayfia in a sauna or the "Church Trio" (Asia, Xenovia, and Irina) discussing undergarments.
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
Bundled with DxD DX.2 , this episode follows the BorN season.