Before the Fourth Holy Grail War

"Everyone! This is Natalia Kaminski, the person I told you about." Jun introduced Natalia to the Servants.

"Natalia, these are my faithfull heroic spirits. Penthesilea, Mordred, Jack the Ripper, Frankenstein, Atalanta and Semiramis." He finished the introductions, leaving Natalia speechless.

'What kind of monster is he for being able to summon and maintain so many heroic spirits in the modern world!?' She thought.

After having her settle in, Jun asked access to all her accounts to see she had deceptively little money.

"I have a right to enjoy myself with the money I earn right!?" Was her answer to that. Despite being a big earner, she was an even bigger spender so her savings were nearly empty.

Jun just produced some gold with his Grail and had her sell it to bolster their accounts and the way Natalia drooled at the golden grail was enough to give a good understanding of her money grubbing nature.

After that, Jun worked the Demon Palace Laplace to the limits to figure where to invest in to reap the benefits years later. Money was always a good thing to have after all and he might need it for later. Who knew, he certainly had a few ideas.

Next up, he "kindly asked" the monks to leave Ryuudou Temple and pass on all rights to the identity he had Natalia make for him. With his charm turned on to the max, even making them all willing slaves was possible so soon enough, Ryuudou was Jun's.

He began remodeling the place with heavy bounded fields, establishing workshops and remodeling the cavers where the Greater Grail was sealed as well.

The structures were enhanced and expanded while the same style was maintained and multiple underground levels along with a connection to the caverns was build within the temple.

The only location that could be passed was the stairs up to the temple gate in which Jun places several tough magical gates to block all entry of unauthorized folk.

Getting Maya proved to be easy, he found her, a child soldier being assaulted by a bunch of other older soldiers and, after he killed them all in pretty devastating fashion, she followed him without question, thinking her life belonged to him.

Jun thoroughly inspected her with his Eyes of Akasha to create the optimal training and enhancement routine for her and, for the next twelve or so years before the Fourth Holy Grail war of Fuyuki started, training her, as well as himself while figuring ways to enhance her and Natalia was Jun's main focus.

He didn't yet want to turn them into Servants as doing so after they got more powerful and enhanced by him would prove to be more beneficial.

He designed Breathing Methods for the two of them from the ground up by drawing on his own experience and his stored knowledge. Not only would this enhance their capacity for physical feats and magecraft but, it Natalia's case, he also designed it to refine her very faint Succubus heritage.

There were two main avenues of thought for enhancement and they were meant not only for the normal humans like Maya and Natalia who were pretty normal, at least by Jun's standards, but for the others, himself included as well. Still, the two would benefit the most of course as they were still weak.

The first was a full body runic inscription, Jun had already begun designing a special one with additional features for himself but it was something all of the could benefit from without a doubt.

Second, was the reproduction of the Klironomia, nanomachines derived from the technology and Authority of the Twelve Machine Gods, which exist solely within the Atlantic Lostbelt.

The Klironomia are nanomachines made of a metal not found on Earth, known as Orichalcum, which is also used in the Aletheia of the Twelve Machine Gods.

In their isolated state, the Klironomia appear as a grey liquid like mercury but they are relatively safe, not being poisonous or corrosive, and having programmed limitations against running amok.

They can be used to greatly enhance or restore the strength, performance and longevity of an individual or object they are applied to. They can even act as a pseudo-perpetual motion machine and generate enough Mana to sustain a Servant without a Master

Although they were not that beneficial to servant level individuals in terms of adding to their raw power, they could still fulfill other purposes like countering poisons and such.

For weaker beings though, it was a means to give them the power to face a Servant. Not only that, they allowed for restructuring of living beings and could be programmed for such an end.

As a technology originating from the machine gods, Jun wanted to integrate it into his Aeternus Titanicus Eversor among other things, to boost its self repairing functions and general performance.

Still, while the full body runic inscription was a relatively easy thing to do, the hardest part being convincing a few of the recipients to let him drawn on their naked bodies which he ended up having to create a machine that did it for him, the Klironomia were a much harder thing to pull off.

This was because a lot of their power came from the godly Authority imbued in them, which Jun lacked, he needed something on that level in order to make his Klironomia rival or even surpass those originating from the machine gods.

However, Jun still found a way to use them. By maintaining their connection to him so they can draw directly on his power, he could use them to enhance the physiologies of those he wanted to a significant degree, making them completely superhuman.

For those like Natalia who were mixed bloods, he even succeeded in drawing out and refining her Succubus heritage and enhance her supernatural abilities.

Speaking of Natalia, she now completely lacked any barriers with Jun and although his charm and charisma played a big role in such a development, it was also because she was truly enjoying her new life.

Eating and drinking the stuff gods do, driving expensive cars, living in a palace ,obtaining power and longevity and a boss that rarely complained nor rode her too hard except when she wanted too, it was truly heavenly.

For those you caught it, yes their relation had turned sexual but rather than lovers like Jun was with Penthesilea, they were more like close buddies who happened to fuck each other because they enjoyed it.

Well Natalia admitted the sex with Jun was addicting and the best she ever had and her enhanced Succubus traits also made her cling to him more in that regard but the romance was still very little.

Maya also offered to serve Jun in such a way but Jun simply told her "When you fall for me." and brushed her off.

She asked why that was since he had such a relationship with Natalia and he responded.

"Natalia is serving herself as much as me . . . Hmm, maybe even more . . . Definitely even more. That's the difference." Jun pointed out and Maya bowed and excused herself to think.

Despite no longer asking, Jun noticed Maya spending more time with Semiramis, learning the art of seduction to better entice her master, which made him chuckle, finding it a bit funny. These days, he had been missing his friends and girlfriends back in DxD.

While he was cooped up doing his thing he didn't even notice the passage of time but experiencing daily life with others reminded him of those times he spent with Cleria, Lavi, Sae, Natsume, Valia and even the boys like Tobio and Kouki with whom he even had bros nights.

Still, time mercilessly kept going for him, without a clear path of progress, Jun's abilities stagnated. Even building more noble phantasms was no solution, he needed to enhance his vessel, enough to face the powerful foes of the Grand Order and the Lostbelts, as well as the many enemies in DxD.

Jun had his eyes on the essence of All the World's Evils that he could get from Angra Mainyu, he hoped that would be the solution to his problem but for now, the Fourth Holy Grail War was about to start and he had made his preparations, all that was left, was to summon a Servant.

The main preparation was the unique properties of his full body runic inscription. He had taken all his command spells, even made a couple more of them and made it a full body runic inscription / command spell hybrid much like Illya would have a full body command spell in the future.

It would drain its power if it was used constantly but it drew more from Jun's grail to restore itself so long as Jun stopped using it and, by draining on its power, it temporarily allowed Jun to perform extraordinary feats while also fulfilling the general functions of regular command spells better than them.

"Now then girls . . . How about shocking our soon to be new companion?"

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P.a.t.r.e.o.n is officially up!

The link is: https://www.p.a.t.r.e.o.n.com/lusoba without the extra dots of course.

You'll get to read up to FOUR week ahead, a full month, but I'll still post here.

There's also my other novel Archon of DanMachi, do check it out!

I would greatly appreciate any support since this is going to be my breadwinner.