Two months later, Castle Fuerig, Gremory Territory.

I took some time before departing for Asgard, as I wanted to practice magic and train a bit, as there would be absolutely no possibility to avoid combat during my trip there.

Additionally, mining and industrial progress in the Yestera Plane was going very well, as currently, from the latest reports, factories have already started producing the first Mechs, now giving more focus on Drones, as there was a deficit of Drones for all things that needed to be done.

After finishing the entire conquest of the Yestera Plane, I have decided to experiment more with the Dark Light Clan Trait, and I have developed a new style of usage called Truth-Seeking Orb Style. This technique consisted of compressing a massive amount of Dark Light into an orb-shaped ball that generally floats behind the user's back in a circular formation.

My limit was creating four balls, currently.

These "balls" are called Truth-Seeking because they can be used on a subconscious level to attack, defend or support. Additionally, if needed, they could also change their shape, split, merge or self-destruct, creating a huge explosion of Dark Light.

I created this technique because I lacked proper usage of the Dark Light Trait aside from the Gate of Babylon Style, which included weapon creation from Dark Light and, subsequently, even Chains of Heaven.

What surprised me was that, after gaining my True Name and my talent reaching the top, I easily reached Master-ranked mastery in the Norse Rune Magic and Abyssal Runic Magic. It was also because they were similar to Tier Magic System, as Abyssal Runic Magic was one of its bases.

My casting abilities increased with higher mastery over Runic Magic of various types, even when using Tier Magic System.

Additionally, my mastery over Devour Clan Trait went from Novice to Adept, which was pretty good, as I could now use the Devour more skillfully.

"My Lord, a messenger is waiting for you in the Hall, bearing the sigil of the Lucifer Clan."

Said the butler that entered my training room as I opened my eyes.

"I will be there in a moment."

I answered as the butler bowed and left the room while I stood up and clothed myself.

"Dammed old man... still, it was just a matter of time until he ratted it to Lucifer."

I muttered as I went to the waiting lobby, where I saw an average-looking middle-aged devil as he bowed deeply to me.

"Lord Lucifer-Gremory, I bear the summons from the Great Satan Lucifer for you to come to the Capital City Lucifaad within the next seven days."

Stated the Envoy from the Lucifer Clan.

"I will be there within one day."

I replied to the Envoy.

When Lucifer was aware of my existence and wanted to meet me, I needed to be there as soon as possible. For several reasons, the smaller one was to make a good impression. I was inquisitive about the major one, though Lucifer summoned me. Still, I had some thoughts about what he wanted.

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After that, the Envoy went back to where he came from, and I went to prepare for my short trip to the Lucifaad.

Probably the biggest reason for this summons was due to getting assigned a Lucifuge Clan member, and the only one suitable was Grayfia. Right now, she was around the early stages of Ultimate-Class, as she was probably the most talented member of the Lucifuge Clan ever born.

Her father, Lord Gerstahl Lucifuge, even declared her his Heir.

I also was a bit scared, truth to be told, about this entire meeting with Lucifer. I didn't know the exact relationship between him and my mother, Rayla after she escaped from home. Still, it would be best To get into his good graces; currently, I was too weak and too strong.

After several hours, I went to the teleportation formation and teleported away.

***

Underworld, Lucifaad

Lucifaad was an enormous city that was home to millions of devils. The glorious and magnificent capital of the Devils, which was inhabited by all Four Great Satan Clans and also, Six Houses of Lucifer that guarded this city.

I looked over and cast a concealment spell over myself, so no one under Satan-Class specializing in magic won't be able to sense me. I didn't want to attract attention, as with my appearance; after my blood changed my appearance, I looked like Lucifer.

Currently, the entire Lucifer Clan has three people, including me, Original, and Rizevim.

If possible, I wanted to avoid meeting any descendants of Satan Clans, as they are problematic entities. Not that they are strong but rather arrogant, so it would be highly possible that I would either kill them or cripple them, bringing me necessary trouble.

I went to the greatest castle in the entire Lucifaad, which belonged to the Lucifer Clan. When I entered the perimeter of the place, I noticed that it was heavily guarded, as hundreds of High-Class soldiers were patrolling the area, and I even sensed ten Ultimate-Class devils present.

As I looked around, my eyes were on the silver-haired middle-aged man in a gorgeous, aristocratic-looking outfit as he was standing near the entrance to the castle.

"I can sense you; you know, youngling. I am a master of more than ten types of magic, so while your mastery is almost perfect, it is meaningless in front of me."

Siad the silver-haired man indifferently as I undid the concealment spell.

"Greetings, Lord Gerstahl Lucifuge."

I greeted the man politely as I slightly bowed.

Head of the Lucifuge Clan, the right hand of Lucifer, and probably, he would be my father-in-law in the future. From what I sensed, he was at the Satan-Class, and he was pretty strong, judging from his energy signature.

I remembered that he died during the civil war in canon, but now with my presence, as I planned for no civil war to happen, he would survive. It would be a shame to lose such a powerful person.