Outside Eldiw · story-area
Xenoverse (dimension)
The "Xenoverse" is a dimension named in the wiki's region navigation template under "Outside Eldiw," reachable via a gateway at Aurora Den after completing Battle Pass 5 ("The Song of Memory").
How to Reach It
Via a gateway at Aurora Den, opened after completing Battle Pass 5.
Story Relevance
Presumably the titular dimension referenced in the game's full title, "Xenoverse: Per Aspera ad Astra"; however, no dedicated wiki article with further detail (encounters, story content, visuals) was found/accessible during this research pass, so specifics beyond its existence and access method are unverified.
Source: pokemon-xenoverse.fandom.com (Aurora Den article and Template:Eldiw navigation box, raw wikitext) confirm the name and access point; no standalone 'Xenoverse' location article was found to verify further detail. Low-to-moderate confidence beyond the access method — flagged as a research gap.