On the other side of the dining table.
Rias, who had just finished explaining the importance of bodyguards to Sakiko, turned her head and saw Sayaka, who had turned pale as if she had suffered a major blow.
She asked, "What happened to her?"
Tatsuma answered, "Yukina overheard her."
A smile appeared on Rias's face. "That truly is bad news."
After returning from shopping and chatting with Yukina for a while, she had roughly understood the situation between Yukina and Sayaka.
Although these two people were not related by blood, living and training together since childhood made their relationship closer than that of sisters. It was no wonder Sayaka was so devastated when Yukina, who she treated like a younger sister, overheard her.
However, this kind of thing didn't require too much attention. Anyway, they would eventually share a bed, and they would naturally make up later.
Withdrawing her gaze from Sayaka and Yukina, Rias looked at the man sitting next to her.
"Tatsuma, my brother contacted me recently, preparing to make an exception and promote you directly to Ultimate Class Devil."
"Oh."
"Your reaction is quite flat, don't you have any thoughts or questions?"
Tatsuma shrugged and replied, "There's nothing to feel emotional about."
With his current strength, being promoted to Ultimate Class Devil in one step was very normal.
If Sirzechs was really planning to make him go through the process, upgrading step by step to Mid-Class Devil and High-Class Devil, then he would be surprised.
He asked, "What about the promotion ceremony? Do I need to take some time to go to the Underworld?"
Rias said, "My brother said there are a lot of things going on recently, so the promotion ceremony will be postponed until after the Three Factions Conference ends."
"However, the granting of the Ultimate-Class Devil position doesn't need to be that troublesome. It can be done in advance."
As Rias spoke, she took out an envelope with a fly pattern printed on it and handed it to Tatsuma.
"This is an invitation letter from Ajuka-sama, he wants to meet you privately."
"Besides the granting of Ultimate-Class Devil position, it seems that he also has something else he wants to discuss with you."
An hour later.
After finishing dinner with Rias and the others, Tatsuma arrived in front of an abandoned building in the suburbs of Tokyo.
According to the contents of the invitation letter, this was one of Ajuka's strongholds in the Human World.
Pushing open the door and walking into the abandoned building, Tatsuma saw that several researchers in white coats were chatting.
Noticing Tatsuma, one of the women emitting a Devil aura took the initiative to greet him.
"Tatsuma-sama, good evening. Ajuka-sama is waiting for you on the rooftop, please follow me this way."
Tatsuma nodded slightly in response, following the female Devil as they took the elevator all the way to the rooftop.
Unlike how it looked from the outside, the rooftop of the abandoned building was a meticulously decorated garden. Not only were there flowers, plants, and trees, but a quick glance even revealed a considerably sized pond.
After the female Devil bowed and got out, a voice sounded in the garden.
"First time meeting, Red Dragon Emperor. I am one of the Satans of the Underworld, Ajuka Beelzebub."
Tatsuma looked in the direction the voice came from, and a man exuding an alluring aura came into view.
Tatsuma walked over, sat down opposite Ajuka without ceremony, and asked, "Rias said you wanted to talk to me about something?"
"Yes, it's a personal matter, but before that, let's take care of the main business first."
Ajuka took out a certificate and a small box and handed them to Tatsuma.
"This is a certificate made of special material that proves your identity as an Ultimate-Class Devil."
"As for this box, it contains the Evil Pieces that every Ultimate-Class Devil has."
Tatsuma accepted the letter, opened the box, and glanced inside.
There were a total of fifteen pieces in the box, consisting of one Queen, two Rooks, two Knights, two Bishops, and eight Pawns.
Among these, the Queen piece was a different color from the other pieces, appearing bright red.
"Mutated piece?"
"Yes, you're lucky, we just recently produced a Mutated Queen piece. Sirzechs and I did a little maneuvering to hold onto this piece and leave it for you."
Tatsuma said, "Although I don't know if it will be useful, I'll say thank you for now."
"No need to thank me, after all, your existence is very important to us."
Ajuka snapped his fingers, and the tabletop in front of him slowly split open, and a stone tablet rose from within.
"If there are no problems, let's register your identity."
"No problem."
Tatsuma put away the box, raised his hand, and injected a bit of demonic power into the stone tablet.
The next second, a red light bloomed on the stone tablet, and a handprint quietly formed.
However, just then, Ajuka suddenly let out a sound of surprise.
As if he saw some strange phenomenon, he reached out to touch the stone tablet in front of him.
A magic circle unfolded, and a large stream of data flowed through his eyes. After a moment, he stopped his actions, and his expression became strange.
Tatsuma asked, "What's wrong? Is there a problem with the registration?"
"...There's no problem, or rather, it went a little too smoothly."
Ajuka stared at Tatsuma for several seconds before slowly speaking.
"Red Dragon Emperor, do you know the principle behind this stone tablet's identity registration?"
"I don't know."
"Just as I thought, if you knew, you wouldn't have exposed it so easily."
Ajuka snapped his fingers and summoned another box containing Evil Piecess.
Opening the box, he took out one of the Evil Pieces and placed it on the stone tablet.
Buzz! Buzz! Buzz...
A faint energy fluctuation rose, and the stone tablet and the Evil Piece resonated.
"This stone tablet used for identity registration is forged from the same material used to create Evil Pieces."
"For Devils who are reincarnated later, identity registration requires the stone tablet and the Evil Pieces to resonate before the registration can be completed."
After explaining the principle of the stone tablet's identity registration, Ajuka then asked a meaningful question, "Red Dragon Emperor, where are your Evil Pieces?"
Tatsuma said, "Of course, it's on me."
Ajuka said, "But when you registered your identity just now, you completed the registration directly through the Devil's bloodline, do you know what that means?"
"It means you saw incorrectly."
Tatsuma raised his hand and touched the stone tablet.
At the same time, he unequipped [Pure-Blooded Devil] and [Satan Bloodline], leaving only [Pawn].
This time, the stone tablet successfully resonated with the Evil Pieces inside him, emitting a special fluctuation.
"See, there's no problem, right?"
"..."
***
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