How To Survive In The World DxD With Fragment Memories

Another 15 days went by and Masaru was currently traveling with a bag on his back hiking towards Ajuka's laboratory, yesterday was the last night he spent together with his peerage members before they all went off to their respective training and part time working. Because Masaru taught all of his peerage members magic to imprint school knowledge into their mind so they would not forget, the idea of having them go to school (Middle school, not high school) had flown out of the window.

However Masaru already told his peerage they will be attending high school together with him, except for Shirone who will be in middle school at that time. "Sjoe!" Masaru felt quite warmed up after traveling from his home all the way to Ajuka's laboratory on foot as training, he noticed Yui was standing outside waiting for him. Her shocked face was truly priceless. "Why are you so sweaty!?"

"Because I traveled by foot from my home" Yui looked at Masaru as if he was a madman but then she remembered her cousin who is also a training madman 'Is all boys at this age like this?' She thought as she led him inside first towards the public showers, it took about half an hour to finish wash up and get dressed in clean clothes. "That's much better" Yui nodded but she could not help but stare at the parts where the shirt was clinging to his lean muscular body, she unconsciously swallowed while leading the way towards Ajuka's office.

"Welcome, let's get straight to the point. That report regard the creatures, that punch you executed at the noble's party. Did the creature has such a aura?" Masaru thought for a bit to remember then he nodded but then shook his head, "Although I did try to imitate the aura, unlike mine which was 50 pure ki and 50 negative Ki. The creature was 100% negative and the pressure was several realms above what I simulated"

Ajuka nodded then a smirk form on his face "You also used Worthless in that punch didn't you?" Masaru flinched, he was surprised but then realized yes he was in front of a monster so it will make sense he noticed something that others did not, "In order to control the Negative Ki you have been scanning it several times to nullify the influence effects it has over your own mind which allowed you to naturally begin something the Japanese humans would call Yin Yang, if it wasn't for the fact you could not go over that 50% negative without the KI itself became berserk you would have been able to simulate it at 100% in essence although not pressure because your still weaker than it"

Masaru nodded, he could only take off his hat for this genius, he is simply a monster with his brains alone. "Thanks to you I have made some progress on several energy based research projects and your simulation I have recorded it as a sample for me to research until we find a puppet like you explained in the report"

Ajuka removed his glasses while leaning back on his chair, "What i want you to do is to learn everything you about every subject you can. Use that memorizing magic of yours to ȧssist you complete the task, I already researched that spell of yours and honestly it's quite a remarkable spell that actually has a side effect of fȯrċɨbŀƴ develop the brain. In order to counter this side effect from causing trauma I have already created some pills you can intake till the development completed"

"Why would you do so much for me?" Masaru knew Ajuka was going further than just helping, Ajuka smiled warmly "I am only doing something I am meant to do... You don't need to understand this, just complete the tasks I give you and learn everything you can within two years" "Yes Ajuka-sama"

"Yui, you will be responsible for Masaru the first five months while he is in the laboratory except for when he goes out on missions" Yui saluted "Yeah Ajuka-sama" Masaru however thought 'Missions? Did not think I will be doing such a thing though' Masaru followed Yui who started to explain the variety of departments.

The Energy Department is responsible for all projects related to energy, whether it is mana or even Ki. They perform experiments together with other departments that was to test their prototype to see which energy is most sufficient or when the Energy department has to create or at least artificially create a new kind of energy if needed.

The Technology department, the name is self explanatory since it was a department that dealt with the technology surrounding the devil territories and is one of the largest lab department that has even sub departments that further breaks down the tasks of each department like a production ȧssembly line. Elizabeth, Diehauser's peerage member work in this department.

The Medical department responsible for working together with other hospitals in dealing with experiments on find cures for diseases, replacement medicines when materials become scarce and anything related to the health care of all devils. Yui works in this department.

The Evil piece department, this department is to research and understand the mysteries of the evil pieces as every time there is a new discovery made of the evil pieces. There are other departments but it is only to improve the products of the human worlds for the Devils use, so there was no explanation required there.

"There is a cafeteria on the ground friend, the public shower you already know of and finally the Dormitory is linked to the first floor on the eastern side it has green doors. Hard to miss it" Yui concluded her tour "Any questions?" Masaru shook his head

>/<

In the Medical Department Masaru spent the three months researching the sleeping disease which Ingvild and Misla was suffering from, so far his worthless ability appear to have nullified the effects for Ingvild but he could not do it with Misla as he first required to stimulate her soul frst before he can use worthless to deal with the disease otherwise if he does it the other way around she might never wake up again. Unless he could find a way to remove it without any side effects.

As for the technology department, Masaru made sure to study the latest phone, ŀȧptop, and other mobile technology since he intends to start a tourist company he will need to know of mobile technology he can use to do his work while he was on the move. Even Elizabeth his sister agreed to help him design some personalized tech which only he has to use as the equipment for his company which no one else has, but her condition was that he must plan a vacation for her on her birthday when the company opens.

Yui who was against Masaru studying her found the boy was rather diligent especially the subjects he studied reminded her of her aunt that was still in a coma, deep within her heart she was hoping that Masaru would succeed so he could rescue her aunt who suffered injustice from the Bael family who was even looking for her as well. That group of pure blood fools would stop at nothing to kill her unless she can change her status such as become someone's peerage, this way will be seen as cutting off ties to the family.

Masaru however did only have the chance to study under Ajuka's guidance three times in these three months, and all three times it was to enlighten Masaru's understanding towards the Sleeping disease. The strange patterns in the disease resembled that of the creatures Masaru once fought, since he scanned those beast before so he was familiar with the chaotic elements that has no order even if he removes one it will still function.

The Sleeping disease had similar characteristics, which means it's a disease a devil contract when under heavy stress, emotional disorder, instability of the mind. There is many other conditions but it meant this disease originates not from the outside in the air but within each devils body, Masaru came up with a crazy hypothesis. He speculated that the devils or Satan himself was a descendant of the Ancient Creatures the only difference was the devils were intelligent, or it could be one of the creatures mated with a human and thus given birth to the devils?

He could not prove since most of the records about the Ancient one was lost, but if that is true then the sleeping disease would make sense. Once the mentality weakens far enough, the ancient bloodline has a probability of being stimulating awake and thus causes the chaotic elements to clash against one another which activates the body's self protection mechanism but inducing it to fall asleep while the chaotic element continue to clash thus reducing the life span of the devils.

(AN: highschooldxd.fandom.com/wiki/Misla_Bael => Check the disease information)

Ajuka who received this hypothesis did not get angry nor did he rebuke Masaru, instead his eyes grew wide in surprise as the information and some evidence although it was too few it already displayed Masaru was close to finding the origin of the Common disease and a possible way to cure it.

>/<

Today Masaru was following Yui to Ajuka's office once more but this time there was a emergency, when Masaru entered Ajuka gestured for him to take a seat while he was still busy sorting out documentations. "I have read the report of the other departments and to be honest I did not expect you to start helping so actively in such a short amount of time, although I can't approve your Medical hypothesis since it will cause a uproar if this is proven true. Then all the factions would unite using this as a reason to deal with us"

Masaru nodded, he could understand since the supernatural world was tense with no true allies between each other they will only cooperate when both party benefits from it, no benefits meant no cooperation. "But then again, I heard from Elizabeth you intend to open a branch of your company in Lilith Capital?" Masaru nodded "Yes, My grandfather thought since there isn't a company like that in the underworld I need to secure both points before I start, because once I start similar companies will sprout afterwards"

"Well I have a useless building in the Capital, you can have it as a reward for everything you have done for us up til now. I have also sent a recommendation request to Sirzech to increase your Noble Rank to Earl, with all honest with your current Power you should actually have a Marquis or a Duke Rank but because your family is still small and most of your peerages are working outside instead of consolidating your strength, it will be difficult to increase your Noble rank beyond Marquis which is why I need you to push forward with your company and have all those people working at other locations return to your family and work in the companies you create"

Masaru understood Ajuka was trying to help him increase his family's noble rank as high while as fast as possible, it appears some people tried to make a move or could it be Ajuka was planning something for him he was not certain but he could at least trust Ajuka. "Now then before you leave for your mission draw up your business plan include the goals, blue prints as well as it's name. Give it to Yui who will then sent it to your home for you" Masaru nodded

"The mission that came for you is from the Bael territory. There has been signs of a incoming Demonic Beast Stampede, these stampede is simply a large group of variety of monsters moving together in the same direction. Don't look down on these monsters because they are squeezed together so they themselves can't stop easily meaning you will be dealing with something similar to a Zombie outbreak. Your task is to go to the Bael Territory and support them as my representative, they might look down on you but don't take seriously and simply ignore it. Only count the number of people, their faces and report them to me so I can have a excuse not to make a move next time they ask for help"

After accepting the mission Masaru went to his temporary office drawing up his business plans, but he also included a security company where companies could hire security guards from a trusted source. Masaru knew people like Jacob would have a hard time doing other work than being a security guard so it fit perfectly together with his tourism agency plan. He gave the plans to Yui who sent it over to Dominic, Masaru began to pack his bags and left immediately for the Bael Territory.

>/<

"HONEY!!!!" Dominic was calling with a loud voice causing Calfa to rush towards her husband, even Damian arrived, "What's going on!?" Dominic gave the business plans Masaru sent to read over, after she gone over the plans and the two location Masaru gained as a reward. "How fast you think we can renovate these two buildings according to the plans?"

Damian read the documents thinking about the contact he has, "Two days... Renovation can be done in two days but recalling all the peerage members to fill in as staff members, this is a risky plan --- huh?" Domonic smiled "Yes, it appears Ajuka-sama sign a contract with himself that he will cover the loss but I believe he would not have signed such a risky contract if he was not certain it would work"

"I will then contact my old friends to help out with the Renovation" Damian left immediately, he felt hyped this was his family's first underworld large company that his great grandson is about to start how could he not be happy.

"Honey, I want you to call all my old peerage members tell them to resign and return. Since they are experienced in the entire devil country locations they will be our staff for the Tourist Agency" Dominic watch his wife leave in post haste while he went towards Diehauser's office, "Son, it's time" Diehauser wondered what was going on but the next word made him only choke "Tell your peerage members including their peerage members to quit their jobs, except for Diana. Have them return" Dominic hands over the business plans to Diehauser to read.

"It appears Ajuka-sama will be helping us from the shadows, so it will be best if we move fast... I am not sure but from this movement I can guess he wants all to recollect our military strength and consolidate it while having a Source of Income for ourselves..." Diehauser nodded "He wants our family Noble rank to rise fast.... With Masaru's high noble rank many will be naturally deterred and the number of enemies that may target him will decrease which makes it easier for Ajuka to handle only the stronger ones since the weaker ones will stand back... Since some of them are only targeting Masaru out of jealousy"

Diehauser thought for a while "I will contact them however I think Jacob's group will take a while since there is a demonic beast stampede occurring right now" Diehauser saw a note attached to the bottom of the last paper he almost overlooked "And it appears Masaru is heading that direction as well"

>/<

"Ajuka-sama why have you given such a large amount of support to Masaru's company to the point of willing to risk if it fails?" Yui secretly read the notes, letter and contract Ajuka added to it, Ajuka looked at her with a blank look. "How many years do you think Masaru catapulted the research of Medical, Energy and Technology alone?" Hearing Ajuk'a question Yui did not answer cause she did not know, she was not in charge of that department.

"He catapulted those three department 10 years ahead of time, now calculated the amount of resources according to our previous budgets consume for ten years for three departments?" Hearing this Yui felt a shiver of excitement running down her spine but also shock, a single boy did that? But how? he was here to study! "It was all thanks to that spell book he had, he could scan any object, energy and even spiritual beings... Not to mention his conceptional ways of mixing Norse Magic style with Demonic energy allowed the energy department to develop a new magic system for Devils who has low demonic powers compared to others... The sheer amount of things he provided is actually making the reward I gave him appear too few, which is why I am pushing his family to move fast according to Masaru's business plans because honestly I find it flawless and something our current Devil world require, especially when Young devils are sent to the human world" 'But then again, having a stronger ally who can help me from the shadows will work as well since we Satans can't openly make moves so easily' He thought

Yui realized just how absurd that boy was or actually that book! She turned and left the office not realizing the strange look on Ajuka's face. "And I am helping him to prevent him from declining my request to have you in his peerage when the time comes... I fear I won't be able to stop those elders of Bael Family from approaching you one day... To prepare for that day I need Masaru to be a heir of a Duke family and his wealth to be on par with the Gremories at least within the next five years"

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Author Note:

Just a heads up, Canon will start with Volume 4 *bows* Love ya all as a author would