The Metalwood Saga / Reference Guide

Full-series spoilers

Defense Mechanism

The Defense Mechanism, originally translated from ancient texts as Thangail Gaud (shield machine), was theorized by Tarathiel to be a galaxy-spanning device meant to destroy the apocalyptic threat of Guruthos. Orym later reveals that it is actually the "Pyramid Offensive System," an incredibly deadly network of pyramids across three Seed Planets designed to harness the power of millions of souls to sever the Twins from their magic.