Discipline: The Record of a Crusade is based on a game by the same team that produced Bible Black a few years back. However, the Ero-Animes were produced by different companies. Personally, I prefer Discipline over Bible Black due to the complete absence of the occult material that the Bible Black was based on. It's just not my cup of tea. Discipline is more a comedy/action/myster­y series with very heavy sexual themes, after all, it's Hentai. The characters are what one would expect from it's source, very well drawn and most sex scenes are very detailed in the 6 episodes that the OVA covers.