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.
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. High School DxD Specials
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 Similar to the Season 1 shorts, these are