The lost city of Kogaluga was plagued by a dimensional rift from which darkness magic seeped endlessly for no apparent reason. Any living being who died within the city would immediately turn into an undead.
Those reanimated by the rift would all start as lesser undead, like skeletons and ghouls, but they would get stronger over time. The sons of Kogaluga would evolve into greater undead if not destroyed, yet even that would only force them to restart from scratch.
Suddenly, the images from the propaganda video that Phloria and Tista had seen at the theatre made sense. Kolga was Kogaluga's twin city and provided it with the power needed to build a stronghold on Garlen where the merfolk hybrids would live once they conquered the sea.
