AniDB

Elias wrote:I would rather say that is alternate version.
As for prequel - timeline is correct, but is rather strange, when main characters of sequel have died already in prequel.

that's exactly what i was thinking

morning,
i noticed a small mistake, correct me if i'm wrong but the prequel to this is Soukyuu no Fafner: Dead Aggressor. I noticed that Soukyuu no Fafner: Dead Aggressor is supposed to come before Soukyuu no Fafner - Right of Left