After the central army was moved away from the Empyrean Terminus Sector, the capital of the Star Ocean Republic was at the most vulnerable moment in its thousand years of history!
Also, the 'tiger' that had marched a long way to the swamp at the frontier did not have much combat ability left, either!
By killing two birds with one stone, Wuying Qi created the most perfect conditions for a coup by himself.
His most elite force, which was armed with the starships of the Covenant Alliance and the Purple Thunder Crystals, certainly did not set off after hearing the news that he was captured and tried, either.