Despite Shye's description of their combat prowess, the existence of Dweezel's Soul Warriors inwardly alarmed Sanada.
Hence, for an entire year, the entire world was peaceful, as Hadean Varsa, the most notorious terrorist organization, had seemingly disappeared from the face of the earth after the devastation they caused in Yon Augenn City.
Naturally, this was because they already more or less had a fairly accurate estimate of the forces stationed in Yon Augenn City and were already making their preparations for one final battle.
In the next attack, oceans of blood shall be spilled, and they won't retreat until their objective is achieved: unseal the Black Dragon of Destruction.
For their attack to succeed, many preparations were needed.
Since all offensive operations have been halted, Shye and his Black Dawn Unit had lots of free time on their hands.