Parallel world

Parallel Worlds are worlds that exist outside of the Rance world.

The current Demon King Little Princess (Miki) and her boyfriend Ogawa Kentarou were brought into the Rance world by the Demon King Gi.

In Toushin Toshi III it is revealed that beings from Parallel Worlds can come into the Rance world using a summon door.

Kurogane Kishin (鉄 騎臣) and Kagurazaki Kyouko (かぐらざか きょうこ) from Toushin Toshi III arrived this way.