Chrno Crusade: Azmaria's Lessons
Chrno Crusade: Az Demo Wakaru Chrno Crusade Kouza · クロノクルセイド アズでもわかるクロノクルセイド講座
Synopsis
Azmaria Hendrick gives some background information on characters and the setting, with flashback scenes from the Chrno Crusade series itself.
Studios: ADV Films, GONZO
Source: MANGA