Within DxD, as Set sitri

'What the heck is this??'

That is the first thing that came to mind, when Set reopened his violet purple eyes, only to look blankly as he stared at the white room, he had found himself in.

Within the white room, Set notices there are a lot of baby toys besides him, of course, he not interested in those toys, instead, he became more interested in the camera that happened to be pointing at him.

But his focus soon snapped, when he noticed a source of Demonic Power also near him, telling him he is not alone in this white room. And that happened to be a handsome looking green haired man, with blue eyes, who for some reason nodded at himself, before his eyes noticed Set is awake.

"I see you awake. Aren't you an interesting one. Not only your Demonic Power increasing at a monstrous rate. But even your body is strengthening itself, like a form of evolution, in order to match the sheer force of your Demonic Power reserves. I must say, you are truly unique, Set-Kun." Said the green haired stranger, who wrote something on the tablet in his hands.

The Devil in question, like said, very handsome, but yet again, this seems to be a common thing among Devils, who are remarkably good looking, no matter which gender they are.

But what got Set attention, wasn't the appearance of this mid-20s looking Devil. But it was his Demonic Power itself, that got Set's attention, since he had never felt Demonic Power like this before.

Because the Demonic Power coming from this green haired Devil, felt like it is data itself. It no wonder this got his attention, since it completely different from other Demonic Power he felt before.

'Fuck, why do I even know that? I supposed it doesn't matter if it feels like data or not… Since what is important… is where the fuck is this place? And where is that damned bitch who dressed like… what even was that? Even way… I don't see Sona anywhere, that means we are in different rooms huh… I swear, if I ever made it out of this place alive… I am going to ripped this mosshead and that strange dressed bitch apart…'

Set curses inside his mind, as he vowed to bring these Devils down if he were to ever make it out alive. He doesn't know where his twin sister is, properly in different rooms.

But for now that doesn't matter, as important that matter is, he is currently incapable of doing anything in this damned baby form.

What matter now, is information why they took him here, as well if he could survive whatever these people planning to do with him, as well Sona.

However, that didn't change the sole fact, Set didn't like this situation where he is incapable of doing anything at all, due to his limitation as a baby.

'Fuck this damned body…'

Along with another curse at his incapabilities. Set soon snapped out of his cursed thoughts, when he could sense two more sources of Demonic Powers heading this way, and even inside this room.

Set who felt their Demonic Power, realised one of the newcomers that entered this room, is his main kidnapper, the strange dressed teenager.

But as Set expected to see this twintail Devil again, who still wearing that pink and white dress of hers, whatever it is. But the second person alongside with this strange Devil, is someone he didn't expect to see here.

So, it no wonder why Set became shocked to his core, and even doubted his senses, when he felt her Demonic Power when he did.

Because the second person who entered this room along with his kidnapper, was his own mother, Zlata Sitri.

'What… is this? You motherfuckers… was she your goal to start with!?' Set roared inside his mind, as he already could figure out him and Sona are just tools to get his mother here!

Roaring inside his mind, it will be a lie to say Set's mind and heart are not in chaos, as both rage and uneasiness wrapped themselves around him.

However, those emotions soon faded like a lie, when the very moment when Zlata came before Set, only to show a warm and gentle expression while looking at him.

Set doesn't know, if this truly the instincts that all babies will have towards their parents. Or maybe he has already accepted Zlata as his new mother, even he if still has memories for his mother in his past life.

But it doesn't change the fact, once Set saw that warm and gentle look from his new mother, was the moment that the chaos within him, seems to calmed down, putting him at ease.

"Set, how are you my little darling?" Zlata askes, while Set himself smiled, and tried to tell her, 'I will be once I ripped them apart.'

However, even if Devils could understand all languages that exists. For some reason, Devils always failed to understand those that incapable to speak, especially babies, which is the reason why Zlata laughed, hearing her son's cheerful laugh, while having no idea of the ill intentions behind that cute baby voice.

"How cute~ Se-Tan!"

For some reason, the strange kidnapper seems overjoyed of his remark of killing her, once he capable to do so, and hopped like a bunny closer to him and his mother. Of course, seeing the cheerful expression, he so wishes he could wipe it off.

"T-Th-That!? Se-Tan you hate me!?" The strange teenager went, when she saw the wary and serious look Set has, when she came closer.

While Set remains on guard, and his mother for some reason begin to giggle, and the teenager Devil looked if the world is going to end. No one noticed the amused look on the green haired Devil, who nodded his head, while he wrote something else on his tablet.

"Now, now, Serafall, of course you going to scary your little brother, if you act that way." From the moment when Zlata said this. The narrowed and wary eyes of Set turned to one of confusion and widen in surprised. Doubting what he just heard.

'Little brother…? As in little brother, you mean me?? This strange thing is my sister?? Wait… now I think of it… she does look a lot like mom… a little too much I say… as if they are sisters… wait a moment, how old is mom again…?'

Set still has no clue how stupidly long the lifespan of a Devil actually is. Nor do he have the clue, this is completely normal, for fathers and mothers, to look around the same age as their children. Heck, even grandmothers and grandfathers also look around the same age as their grandchildren.

Like it was once mentioned before, there never been a Devil that looks like in his 50s, and those in their late 30s appearance wise, are rare among the Devil race.

But a shame, for the baby Devil doesn't even knew this. Became shocked to his core once again, with a blank look on his face.

"So, how is my son? Is he in danger, Ajuka?" Zlata asked this, while Set slapped out of his confuse state, and listen what she meant he was in danger.

"As you knew, there was an experiment done by the Original Satans houses back in the Great War." Went the green haired man, or Ajuka his name seems to be.

'Great what?' Set went to himself, not understanding any of this.

"Yeah, it was a well-known matter, we Sitri were lucky, but they did order many Low-Class Devils, Middle-Class, and even High-Class Devils to send their child to them. And the result… none of them survived…" Zlata went with a sad look, while twintail sister of his, has a look of disgust on her face.

"Like you knew, the experiments ended as a failure. As the body of a baby Devil cannot handle that much Demonic Power in their undeveloped body. But Set-Kun here, is different… not only his Demonic Power is rising by 2.28 DPU per day, which is higher than compared to the normal DPU of 0.08 that normal High-Class Devils at their age, would have.

However, his Demonic Power is increasing at the rate of 28.5 times faster than others of his age. Not only that, even his body is evolving to handle this level of Demonic Power inside his body. Because of that, his body could handle the pressure of his Demonic Power, with his evolving body. Meaning he is completely safe, so don't worry about his Demonic Power harming him."

When Ajuka said that, both Zlata and Serafall looked somewhat confused, but still sighed with relief hearing his body is fine. While Set who is now in his mother's arms now. Looked uninterested, as he truly has no clue what they saying.

'Basically my Demonic Power, or whatever that is, is very higher, which is why I am here? Is this mosshead a doctor?' Set thought, trying to examine his situation, while his black hair is being stroke by his mother, who is being stared with envied looks of the strange looking sister he just found out, or actually remembered.

"What is DPU?" Serafall asked.

"Yeah, I never heard such a term before…" Zlata also asked, as the person who called Ajuka claps his hands together, as if he forgot something.

"Of course, you wouldn't. I mean I normally used the DPU Device to check the reading of Demonic Power into units. Which is why DPU stands for Demonic Power Units. Each Devil has specific amount of Demonic Power inside us, normally we Devils can tell by instincts if that Devil has the reserves of a High-Class or a Middle-Class, but we don't know the exact amount. DPU is used to measure that exact amount, and this device is used to measure how much DPU is inside Devils, or artefacts with Demonic Power inside them."

Ajuka explained, as he brought out a phone like looking device.

"Normal Low-Class Devil has 150 DPU, Middle-Class at normal is at 600 DPU, and High-Class is 5,000 DPU. And before you asked, this DPU Device only can record up to 1,000,000 DPU, which is the exact amount that most Satans has. And 100,000 DPU is the normal standard for Ultimate-Class Devils. Or course, some even have over 10,000. Which is just over the limits of a High-Class Devil."

Ajuka went, as he shows them a number of 68.4 DPU at the mother and daughter pair.

"This is the amount that Set-Kun has now, this shows his Demonic Power reserves are at below the normal 150 DPU for Low-Class Devils." When Ajuka shows this, both Serafall and Zlata looked confused, because the amount of Demonic Power they felt from Set at that time, was not at the normal level of a Low-Class Devil.

Which is why Zlata rechecked Set whose in her arms, the amount of Demonic Power really is. And her eyes widen seeing it is less compared to before.

"It is less… why is his Demonic Power has lowered?" Zlata went aloud.

"Simple, I think your son, has another bloodline ability, besides the Sitri Water ability." When Ajuka said that with a smile, his eyes didn't miss the confused looked at Set's face, as he is at a lost what everyone is on about.

'Not only his Demonic Power, and body are evolving… even his psyche as well? It almost like he can understand us? Interesting, more I look into this little monster, more interesting he gets. But… this also will complicate things.'

Ajuka, who is a Satan, as well one of the two Super Devils. Knew what kind of existence that Set will become. He hasn't told Lady Sitri what he truly found yet. And that is, the discovery how powerful his Demonic Power would become, when he turned 18 years old.

The rate of 2.28 DPU per day, will bring young Set to High-Class Demonic Power the moment he turned 6 years old.

But the thing is… before you turned 6 years old, the amount of High-Class Devil children get on average, is 0.08 DPU per day.

However the moment they turned 6 years old and fully formed their reserves at Low-Class. The amount of DPU their Demonic Power will increased from 0.08 to 0.21 DPU per day until they turned 12 years old, and it will be 2.01 DPU per day until they reached 18, becoming a full-fledged High-Class Devil in terms of Demonic Power reserves.

But what will Set's DPU be at the age of 6 years old? Will they keep the same at 2.28 DPU, or will they like other Devils, increased to another crazy number?

And if Ajuka is right about his calculations based on the three stages of DPU he will get per day, from now, to 6 and at 12.

There is an 88.3% chance Set might be the first Devil to naturally formed Demonic Power at Satan-Class… or 11.7%, he will enter the evolution of Super-Class, becoming a natural formed Super Devil, unlike him and Sirzechs. Who became Super Devils through hard work, unlike the boy who has a chance to become a Super Devil, without even trying.

And Ajuka believes this strongly based one thing… his body is evolving, not only his body gathering crazy number of Demonic Power formed inside his reserves. His body's strength also increasing at a monstrous rate.

'Sometimes, they are High-Class Devils, who don't awaken a bloodline ability, or born with low Demonic Power, even if their bloodline is originally from High-Class. But as defaults exists, there also mutations could exist in our race… it is not common, but it does happen. Who to think a monster like Set here, to be born into our race?

But… his existence cannot be known yet. The other Factions will do anything to stop another potential Satan-Class, never mind a Super Devil.

The Old Satan Faction will try to destroy him or take him as their own. And the nobles… on one hand, they will be glad, for a new potential Satan or Super Devil to appear among their race.

However, on their other hand, they will reject Set to become the next head of the House of Sitri. In fear, he might try to control the noble factions, not to mention, each house will offer their daughters or clan female members to Set in marriage, or to become his lover…'

Ajuka still remembers the times, when the nobles trying to offer him, or his best friend, Sirzechs, their daughters or family to them. 

To the Devil Race, the most important thing is their bloodline, and not letting it dropped to the realms of Middle-Class. Which is why arrange marriages between the 32 Pillar families are fairly common, heck even the Extra Demon houses are the same.

Only difference between the 32 houses from the remaining 72 Pillars of Hell, and the Extra Demon Clans, the Pillars are heavily involved with the politics of their race, while the Extra Demons, besides few, stay away from the politics of their race.

Because of the high specs the Super Devils has, both he and Sirzechs often get offers of marriages, or to become their lovers. Honestly, Ajuka has no interest in taking in a lover, he is a creator by heart and have very little interest in such matters.

Sirzechs Lucifer, that man is madly in love with his wife, Grayfia Lucifuge. Even if his wife wouldn't mind personally sharing him. But that man is obsessed with his wife. He wonders if he will change, once his unborn child will be born.

From what his best friend told him. He is having a daughter, which also seems to be the same gender of his sister who will be born shortly as well.

'Now I think about it… Bael, Phenex, Sitri, Gremory, Agares… and few more of the Pillars, is it by chance for many children from the Devil Pillars to be born around the same era?'

Ajuka knew how hard it is, for Devils to give birth. Especially the High-Class ones. But for some reason, they are many Devils being born, that will be around the same age. Set and Sona are among them. His best friend's unborn child, as well his unborn sister also be among them.

The House of Bael, and the leader of the noble faction. Also has two sons born not long ago. Phenex also has a son same age as those boys from Bael.

'Could be by chance. Or is fate playing something at hands… especially with a monster, like Set-Kun being born.'

Finishing thinking of such things. Ajuka turned his gaze to one of his close friends, Serafall, who also trying to hug her little brother, but Set seems to be wary of her, or not interested? A smile formed on his lips, before Ajuka turned to the mother and daughter pair, along with the topic of all of this trouble.

"He is fine to go home… but before he goes. I think I need to explain about his unique situation." Ajuka simply went, as both mother and daughter show shocked expression on their faces, before Serafall turned serious hearing this.

And like that, Ajuka also told them to bring Lord Sitri, as he too need to know about their son's situation.