Ryuu Seiki
English name: Dragon Century
Genres: Action, Fantasy, Sci-Fi
Type: OVA, Episodes: 2
Aired: Oct 26, 1988 to Dec 25, 1988
Source: Unknown
Rating: R - 17+ (violence & profanity)
Synopsis:
The story of a young girl and a young dragon. Naturally, they are the best of friends, and naturally the rest of the world is against them both. However, when demons decide to trash their world, they side with those who have always been against them.

(Source: AniDB)