The masks have been dropped. External Agents raised the flag of the last expedition to Thanatos. The continent is seething with change! Perseus DeBrun and Terzio Ganet, rankers from another world, showed up. Meanwhile, John Gold accidentally reveals the true identity of the Invasion faction. Even with the support of Themis, the Brotherhood and Veda, they all now face a difficult battle for the peace of the Earth. Saji seems to have found his way home. The finale... the finale is closer than ever! Thanatos, the last mystery of the fukai, finally lifts the veil of its secret.