Flashback Begin
Ajuka was preparing to leave to Kuoh after informing Serafall of his meeting when a magic circle of Bael crest appeared in front of him and the circle was from Zekram.
"Zekram-sama, what can I do for you?" Asked Ajuka politely.
"Am I correct in assuming that you are going to keep with the promise you made to Naruto?"
"Yes, Sir. I've talked to Sirzechs and Serafall about that and they agreed with my proposal and I was on my way now"
"Well, I have a request to ask," said Zekram with a calm face.
"What can I do?" Asked Ajuka.
"I want you to take Grayfia with you"
"Grayfia? If I may ask, why sir?"
"We know about the secret behind the Strongest Queen of the Underworld. Sirzechs marrying Sara is one of the most fortunate things that happened in his life. Though the circumstances remained unfavourable then, they are not like what they used to be" reasoned Zekram.
"I can understand that, but what do you think of the chaos that may happen if this comes out?" Asked Ajuka. Sirzechs and Grayfia were presumed husband and wife by the Devil populace and Grayfia's disciplinary nature always kept Sirzechs in line.
Sara, the real wife of Sirzechs understood this well. That is why she doesn't have any problem with it. She is also an heiress to a clan after all. She is the heiress of the Nebiros Clan.
The Nebiros Clan is one of the Extra Devil Clans of the Extra Devils, that is not a part of the 72 Pillars. The clan is a part of the Six Houses that serve the Lucifer Clan along with the Lucifuge Clan.
One of the Extra Demon clans that had served the Lucifer Clan for generations, the Nebiros is noted to excel at scientific research, being the leading clan in the Underworld that specialized in a variety of research subjects.
This made Sara a weak point to the Lucifer Clan and they abandoned her during the Civil War. When Grayfia escaped to the Anti-Satan Faction during the Devil Civil War, Sara came along with her.
Sara has developed her magic after she came to the Anti Satan Factions and fell in love with Sirzechs as he was one of the few people who interacted with her. Their love blossomed and they married and had a Son named Milicus.
Due to the lack of misunderstanding and unfavourable circumstances, this matter remained a secret and Grayfia was assumed as the Queen of Sirzechs Peerage while Sara was the actual Queen.
Now as she has reached the Ultimate Class, they are ready to reveal the secret to the Devil populace. It may not be that serious, but they knew some repercussions had to be faced.
Zekram got a brilliant idea after witnessing Naruto's power. That blonde had a lot of potential and power to back it up. If they managed to make him listen to them, it would be good as he is going to be an extra layer of defence for the Devil Faction as a Longinus Class Sacred Gear possessor. That's why he is going to give him the 'Perfect' Queen for Naruto.
"I know, Ajuka. But circumstances have changed and I know our people will understand and accept Sara. I want to give Naruto some help" said Zekram. Ajuka understood. Showing favouritism is not uncommon among Devils. Though as Satans, they are not allowed to show any favouritism. Devil's act on their Desires and in such a large faction and numbers, keeping track of everything is not possible even with all the technology and magic.
"What if-" Ajuka's question was cut off by Zekram.
"I'm not telling you to do their marriage, Ajuka. Just introduce them, that's all. Don't you think that is easy?" Asked Zekram, breaking Ajuka's line of questions.
"Yes, Sir" relented Ajuka. There is no wrong in introducing people to one another, he supposed. What they decide to do is their wish, he is not going to concern himself with that. Zekram was looking at him expectantly and Ajuka responded.
"I'll do it, Sir" he gave in.
"Good," said Zekram.
Ajuka took his leave with a "Have a great day, Sir"
The picture of Zekram vanished into Magic particles.
'Phew. I don't know what is going to happen if I introduce those two' thought Ajuka. They are polar opposites and he is not going to get himself stuck in the middle.
Flashback End
After that, Ajuka called Grayfia and with her, they started their journey to Kuoh and that brings us to the current situation at hand.
"Ok, the promise I made to Naruto gives him Kuoh," said Ajuka, dropping the bomb.
"What!?" Yelled Rias and Sona at the same time in shock.
'How can they do this, I was given this territory by my brother' thought Rias.
'I thought both Gremory and Sitri Clans agreed to share this territory' thought Sona.
"Sit down and listen completely," said Naruto, annoyed. 'These girls can be shocked and fooled easily. I have no doubt Azazel expected this and sent me here for that reason' thought Naruto.
"I talked to both Lords of Gremory and Sitri. After that I also consulted Sirzechs and Serafall, they agreed that the promise must be kept" said Ajuka calmly, he saw them calm down and continued.
"As per Naruto's share in Kuoh, I don't know what he wants. Tell me, are you doing contracts with humans? Can you explain to us how you operate here"
"Yes, Beelzebub-sama," said both Rias and Sona in unison.
"While I take care of the territory during the day, Rias will take care of it during the night. That's the agreement between us" said Sona.