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
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.
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
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.
These two full-length episodes follow the first season. One focuses on a vacation to the beach—which ends with Issei in typical trouble—while the other deals with a "breast-shrinking" rumor at school. While the high-octane battles and supernatural politics of
These are 3–5 minute shorts bundled with the original Japanese DVD/BD releases. They are mostly standalone comedic skits with no impact on the main plot. Season 2 ( New ) Extras
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
Bundled with DxD DX.2 , this episode follows the BorN season.