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 High School DxD Specials
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. These are 3–5 minute shorts bundled with the
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. Season 4 ( Hero ) Extras Similar to
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.
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