In Another World With My Smartphone: Volume 17 (Light Novel)  (English, Paperback, Hodgson Andrew)

Doctor Babylon creates a new technological breakthrough thanks to the help of Elluka, a renowned Gollem engineer. What is this new invention, you might ask? Why, it's the Core Frame, of course! A new, revolutionary animal-shaped mech that interfaces with the Gollems of the Reverse World. But will they be able to iron out all the kinks before disaster strikes? The golden mutants stand poised to bring the Reverse World to ruin, and they won't wait around for countermeasures to be perfected! Brace yourself for a tale of swords, sorcery, and political powerplays!