As I returned to the castle Fuerig, my thought was a mess, and I was overwhelmed with anger. I didn't feel for a long time, as I always used Architect to suppress my emotions, not to cloud my judgment.

'Bastard... just wait once I am done; I will give you a fate worse than death.'

I thought in my head.

That bastard made me a prime target for assassination from Heaven, Grigori, and other factions just to satisfy his pride and superiority over others. All Original Satans were the same, arrogant beyond even heavens.

Unfortunately for me, right now, I was in no position to oppose his decision as he was too strong for me to handle, and If I was correct, he had something that allowed him to control all devils. And I was not talking about power, but rather about some kind of blood magic.

In the end, he was the one who created the devil race with the Book of Lucifer, and I noticed that several pages were missing from the book as they were torn out. He probably didn't want anyone to learn about the method of controlling devils through blood.

I read about similar spells that allowed one to control everyone through blood. Ancient blood magic was long forgotten but still practiced by certain individuals.

In canon, it remained lost due to Lucifer's death, but I wonder If I could get my hands on it. If yes, then it would be great insurance for me to control devils and prevent possible rebellion against my rule.

"You seem to be distracted, Lord Zeoticus."

Said a gentle female voice of Grayfia behind me, to which I stopped my track of thought.

"Call me by my name. We are to be wed one day, and you are my part; calling me Lord sounds distant."

I said to her.

"That is not appropriate, My Lord. As your servant, I should follow a protocol of behavior to my best."

She said, befitting to her strict expression.

"You are not a servant Grayfia; you are my partner."

I said with a rather complicated face as I didn't know how to deal with her. My relationship with Grayfia was complicated, to say at best. In a certain sense, she wasn't and was my servant.

A Lucifuge was a partner for Lucifer, a companion, and a friend. I could observe at least that when I noticed her father Gerstahl Lucifuge and Original Lucifer.

As I said that, I noticed her surprise seeing this, probably even though she was mentally prepared for her fate and just accepted her duty, deep down, she was still dissatisfied with all of this, as her entire life was just some kind of scheme for the great cause of all things.

"Then, in private, I will call you by name."

She said this was probably the best thing I could get from her right now. She was still not so comfortable around me right now and too focused on her duties.

"Right, now there is almost nothing for you to do in the Fuerig, but there is still some work that needs to be done in the Yestera."

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I said to her.

"Yestera?"

Asked Grayfia with a confused expression on her pretty face.

"Small world, I have conquered for resources. You will go there and help General Amyke with guarding our factories there. Lately, sea monsters have been unruly once again, with General Level ones attacking our positions there, and I need their second Ultimate-Class person."

I explained. I knew that sea monsters would be causing trouble, and now they were even some General Level sea monsters attacking fortified positions and fortresses. Grayfia was Ultimate-Class with very high combat prowess, so she would be a great help there and, hopefully, solve the problem as soon as possible.

"Also, as we are to be wed, you need to be aware that I already have a fianceé, Venelana Bael, from the Bael Clan."

I said, just to be sure.

"I am very well aware of that fact."

She said with dangerous glee in her eyes, but I ignored that.

Probably she viewed Venelana as competition, which was true, but it wasn't my matter to meddle in that. Both of them were pretty strong and prideful, so it would probably be hard for them to accept each other.

Afterward, we talked a bit before Grayfia departed for the Yestera Plane, and I went to do what I have always been doing, reading magic tomes to perfect my Tier Magic System.

One month later, I was surprised to see that Grayfia had already returned from the Yestera, and she also brought a message from General Amyke. It was surprising that such a gentlewoman on the surface at least annihilated more than ten General Level sea monsters attacking the shores of the Mainland in the Yestera.

Truth be told, I was delighted with the results as Grayfia was a great help. If not for her, I would either need to go there personally or send General Zagan, who was tasked with reorganizing the army and implementing Mechanical Legions into my military structure.

"Splendidly done, Grayfia. Also, have you brought their corpses? My familiar would have great usage for them."

I asked her. Now my Bloody Thorny Flower will soon be finished devouring all the fertilizer I gave her. I would need something on Ultimate-Class to evolve even further to reach a new evolution stage called Devouring Thorny Flower, which was a General Level entity.

"Yes, but only eight of them are in a suitable state according to your instructions."

Said Grayfia as she handed me the interspatial pouch that stored those corpses. Eight of them is a pretty good result and should probably be enough.

"Well done. I can also sense that you have grown stronger."

'Architect, scan her.'

[Class: Ultimate

Demonic Energy: 285

Strength: 76

Agility: 80

Vitality: 50]