Hellhole trilogy

"After the events of Hellhole Awakening, the people of Hellhole and the shadow-Xayans scramble to rally against the threat from the still-living rogue Xayans. Back on Sonjeera, the Monarchy is in an uproar after their surprising defeat and the breakaway of the Deep Zone planets. The dowager Queen decides to go to Hellhole on a diplomatic mission, hoping to keep her power. But after touring Hellhole, Queen Michella is shaken, and begins to realize...

On a colonized planet called Hellhole, defeated and exiled rebel General Tiber Adolphus continues his honorable opposition to the political scheming and selfish machinations of the Crown Jewel worlds and grandmotherly Diadem Michella Duchenet. Adolphus and his companions work in secret to undermine the royal space travel monopoly and form a coalition of Deep Zone planets.