Agartha Fiesta!

is a Japanese light novel series written by Makoto Sanda, with illustrations by Soryu. The series began publication on December 10, 2004 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The doll was the Queen of the ancient kingdom of Agartha! Queen Iselia, who sealed herself in a doll and recovered the long-lost treasure. Madoka Hachioji (← a man), who has fallen in love with her, is targeted by strange treasure hunters who wield a sloppy whip and shoot guns everywhere. All the treasures that Iselia unleashes against it are sneaky, and her strong childhood friend will stare at her ... And what is the crisis of Iselia and the aim of the mysterious organization !? An action comedy that depicts the days of Madoka's suffering.