Baator, 9th Layer of Nessus, Holy Imperial Capital of Anor Londo, Imperial Palace - Sanctus Imperialis
Time flew really fast.
I still remember times from several thousand years ago when Baator was still a fledgling faction located in the Dimensional Gap.
Now it has grown into a powerful faction that lurked in the shadows and preyed on countless planes as its armies plundered its resources and foundation to strengthen ourselves, and lately, it was strong enough that we have started infiltrating Primary Grade 2 Planes and even had constructed small foothold on the Canghzi Plane.
After moving Baator to another location, I used my authority over the plane to divide it into layers in a similar style as Infinite Abyss Universe was stylized.
Basically, Baator had Nine Layers that were each interconnected to each other, and by my usage of my Command Sequence, I have made it that way; it was impossible to enter the Baator. There existed only one entrance to the plane, which was located on the first Layer Avernus.
This rule cannot be broken even by Tier 12 Powerhouses, and only Tier 13 Entities, as they were called, could force their way into the Baator. Still, as long Baator got stronger, even they would need to slaughter their way through Nine Layers to reach the final bastion.
Additionally, each Layer had its own ruler that I appointed through a Primordial Contract. These rulers could even use the power of the entire layer to help them fight and boost their combat prowess, and while the boost wasn't exactly significant right now, as all Layers were rather weak, aside from the last one, in the future, even Dimensional-Class devil would have the power to fight equally Warlock Emperor with a boost from the Layer.
1st Layer Avernus, ruled by joint control of the Military Forces. This Layer had the size of an average Grade 9 Plane and was just one huge military fortress, with countless defensive wards, spell formation, Arcnoatech Tower, Fortresses, and other things to make it absolutely impenetrable. With my genius, it would require minimally pinnacle Tier 11, meaning Warlock Emperor or someone similar with overwhelming strength to force their way, due to all things that I have put there.
Its defenses were also improved and created in collaboration with Dresden Arcanum Empire, which was officially an ally to the Chthonian Empire.
2nd Layer Dis, ruled by Chthonian High Lord House of Noir with its current Lord Diablo Noir, former captain-general of Custodians, after he retired and appointed Sairaorg Bael as his successor. The Main Capital of Dis was Tempest, and it had the size of a Grade 8 Plane.
3rd Layer Minauros, ruled by Chthonian High Lord House of Beelzebub with its current ruler Magister Ajuka Beelzebub. Minauros was also the place where most breakthroughs in the research of Arcanotech were made, and it had countless Arcanotech Facilities and Factories. And it had the size of a Grade 8 Plane.
4th Layer Phlegethos, ruled by Chthonian Elector Lord House Cruach with Capital Drachain. It was a place mainly inhabited by Dragons, as many dragons lived in the Phlegethos due to it being the Layer under the rule of Elder Crom Cruach. Also had the size of a Grade 8 Plane.
5th Layer Stygia, ruled by Chthonian Elector Lord House Grigori, which was the surname of Elder Azrael. Its capital was the city of Arthia and had the size of a Grade 8 Plane. 5th Layer of the Baator had the largest number of the Fallen Angels across all layers as it was created by the newly founded House Grigori.
6th Layer Malbolge, ruled by Chthonian Elector Lord House Bael with its ruler being Elder Zekram Bael. Its capital was called Caladan, and contrary to the Power of Destruction of the Bael Clan, this city was a beautiful place, probably the most beautiful city in the entire Empire, as it combined humble architecture with beautiful nature.
7th Layer Maldomini, ruled by Chthonian Elector Lord Houses of Brunestud and Tepes, home to the all Vampires, Kindreds, and Pale Blood of the Chthonian Empire of the Baator. Its capital was, of course, Yharnam.
8th Layer Cania, ruled by Chthonian Elector Lord Asura, but due to the fact that Asura still officially didn't join the Chthonian Empire as one of the Elders, the place was temporarily managed by the Imperial House from the capital of Cania, Insomnia.
And finally, the 9th Layer Nessus, which was ruled by the Imperial House of Lucifer and by me directly, with its capital of the Holy City of Anor Londo. Nessus had the size of a proper Secondary Grade 2 Plane, so it was the biggest Layer of them all.
Among all Layer Rulers, only Ajuka wasn't someone of Tier 10, as all of the others reached that level of power in their respective power systems. But Ajuka was very close to that level, and his power and techniques were enough to deal with many Holy Spirit Warlocks effortlessly.
After two thousand years of ruling, I have passed the crown of the Emperor to Sirzechs. As expected, Vali refused outright as the only other person who could become an Emperor. Thus Sirzechs became an Emperor of the Chthonian Empire. I retreated to the depths of the Sanctus Imperialis to quietly train, comprehend Laws or study Magic Rules.