Making matters more confusing is that, while the novel continuities for each are clearly officially not connected, the anime continuities of them are officially connected. In the DVD release of the Lost Universe anime, one of the bonuses is a set of Translation Notes, which explains some of the wider background behind Lost Universe.

According to these notes, the anime versions of both Slayers and Lost Universe are part of the same multiverse, with Slayers taking place in the "Red World" and Lost Universe taking part in the "Black World".

Night Dragon Volfied and Dark Star Dugradigdu, as they are named here, are described the primary Deity and Demon Lord of the Black World, respectively, and are explicitly compared to Flare Dragon Ceiphied and Ruby Eye Shabranigdu.

A segment on Symbols and Diagrams notes that "Since Lost Universe and Slayers share the same lore, there are also many symbols that you can see in both series", and goes on to explicitly reference that the same hierarchical depictions of demons and dragons appear in both the end credits of each Lost Universe episode and in the opening and ending credits for each episode of Slayers TRY.