The Isolater: Gonfalon

is a Japanese light novel series written by Hideki Kakinuma, with illustrations by Koji Hasegawa. The series began publication on January 10, 1997 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Larry, Sina, Thomson and other independent descents who landed on a certain planet with a special mission. What they saw on the planet was a closed space "dome". There are multiple domes, not just one, and they are kind of strange, such as a dome that closely resembles the world during World War II, and a dome that has a medieval fort. And people who are frightened by the war ... What the hell is this planet ... Apparently someone set it with a clear intention. But who ...