I must admit that Agreas is a charming city. It was a large city located in the Agares Territory but was exclusively maintained by the forces of the Four Great Satans.

It served as the second capital of the Devil Race, and most importantly, it was where most of the scientific breakthroughs were made. I wonder if they already started researching the Agreas Crystals, which would later become prime material for the creation of Evil Pieces.

Getting into the city wasn't an easy feat, as mostly only nobility was allowed into the city and many of them were after strict screening. For me, as I was officially from the Lucifer Clan, I got a free pass.

'Those four madmen are really paranoid... they must have already started creating the Malebranche, and maybe they have already finished them. Still... from my knowledge, they must have used something else in the forging and creation process, as only crystals of Agreas alone are not enough.'

I thought in my head.

"Where do you want to go first, Vena?"

I asked her as I looked around the beautiful architecture of the flying city.

"We could go to the restaurant first."

Said Vena with a charming smile as I held her hand, and we walked to the most luxurious restaurant that was on Agreas.

I booked the entire restaurant's top floor, which was usually reserved for the most prominent guests. We were led there by water and sat down at the table with the most beautiful view.

We sat down, and both of us ordered some food.

I personally chose my favorite, the dragon steak. This one came from an evil dragon from Three Realms, a real exclusivity. The price for one steak was enough to buy pretty good armor, a weapon, and some supportive things.

Vena chose to eat dragon fish exported from the rivers of Takagahamara.

While waiting for the food to arrive, I took out the God Corpse Potion and gave it to Vena.

"This is potion I refined from corpses of Gods I killed in Helheim. It is called God Corpse Potion and has an enormous effect on physique; it could easily strengthen your physique to later stages of Ultimate-Class."

I said to her while giving her the potion. Vena was just High-Class in terms of physique, which was pretty important. Old man, Zekram must have spent many precious resources on her, as Vena was strengthening her physique in a similar way to me by the usage of treasures and magic.

Vena was shocked seeing the potion, and probably even more than I gave it to her, just like that. This could be considered one of the top-grade treasures in the Dimensional Gap due to its limited resources. Even in the vast Astral Boundary Universe, it would be considered a precious thing.

"I... thank you."

Said she with a smile as she held the potion.

Another reason why I gave it to her, I wished for Vena to become Satan-Class before the Great War. If she did, she would be automatically placed as a commander on one of the frontlines and could help me enact my plans.

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After the food was served, we talked about some random things; I talked mainly about my trip to Helheim and my encounter with Hela, and my fight with the Gods of Asgard. When I mentioned Hela, if felt the air change around Vena a bit, but I think it was just my imagination.

"Oh, and I for prompted to the Grand Duke by Lucifer today."

I said to Vena as I finished talking about my trip to the Helheim.

"That is wonderful news."

Said Vena sweetly.

"When you are departing for the Takamagahara?"

She asked me after a short time.

"I will try to reach Satan-Class before that, as I am very close to reaching that Class."

I said.

With the knowledge I got from Hela about the Astral Boundary, I found out that the ranking system was different there and here in the Gap; it was due to Dimensional Gap was severed for a long time from the Universe, so it started developing as Secret Realm to a different direction.

Satan-Class was the same as Bright World Warlock in Warlock Cultivation System or Level 3 Legendary Arcanist in Arcane System.

From the information I got from Hela, the devil ranking system was like some weird combination of the Warlock Cultivation System and Arcane System.

To reach Super-Devil Class, devils only needed time, energy, aptitude, and nothing else. This was pretty similar to the Warlock Cultivation System. But, from then on, there was one huge barrier to reaching Apocalypse-Class, which was comprehending the Law.

This was, on the other hand, very similar to the Arcane System of Arcanists.

So theoretically, if Underworld had ten times that of energy density, then devils would get stronger much faster, and we could become more powerful. Thought, the path after the Super-Devil Class is like an enormous mountain that is almost impossible to conquer.

When I started researching this topic, I also ordered Architect to look at another thing... something which was in my mind for a very, very long time, unexplained, and only now, after getting knowledge from the Astral Boundary, it finally gave an answer.

Clan Traits of Devils.

They weren't just Clan Traits...

They were the path to the comprehension of Law and breaking through to become a real powerhouse in the Astral Boundary.

After that, I realized something... this isn't something Lucifer could do. Someone born in Dimensional Gap doesn't have such ability.

So the only logical answer was... The Book of Lucifer wasn't really his own creation but rather an artifact that fell to the Draconic Deus a long, long time ago and was found by Lucifer. Based on the Book of Lucifer, he, formerly known as Luciel, changed his name and turned himself into Devil.

Such was the truth of the original.