Disclaimer: I own nothing, this is purely a fanfic for enjoyment.

Cross-over from various games, books, anime, manga, and movies.

The familiar characters you see here belong to their respected authors and owners.

"Active skill name or magic spell"

"Speech"

Time*

Noise*

(Location)

Arc 1 - Chapter 1: A Huge Mistake

(Unknown)

-Akutabe's POV-

Looking around, I found myself seated a short distance from another, more regal, seat with a small table next to it. It only took me a moment to take in my surroundings, my eyes take in every little detail of the room I'm in. I narrow my eyes when I couldn't see the walls around me, nor the source of the light. In fact, I would say I'm in some kind of pocket dimension or in an entirely different dimension.

"Welcome to the afterlife. Though you did not live a long life, you died a short time ago." A woman spoke as she passed me and took a seat in the chair in front of me. The most annoying thing about her was the unnatural long blue hair, which I can tell it wasn't dyed at all.

"And tell me." I test my voice a bit, no different at all, nothing wrong with me from what I can tell. "Who are you and how did I die?"

"I am Aqua, a goddess who guides those who die young into the afterlife." The so-called goddess replied, smiling serenely as she checked something in the book next to her.

"As for how you die... Wow! Talk about bad luck! You died from food poison that your hired worker bring in for lunch. Without knowing the food was made by someone that doesn't know how to cook at all, but know how to make them look normal. However, you still ate it all without paying any attention to and died not a few seconds after finishing it! HAHAHA!" Aqua started laughing really hard.

I narrow my eyes and made a mental note to never eat anyone's food other than my own. Another mental note, force someone to eat my cooking just in case someone messed with the ingredients.

I release a powerful presence onto the goddess, who let out a shriek of fear.

I glare down at the disappointing goddess if she really one because I am not even young at all and I have not seen her before.

"Speak. Why am I here?" I stare down at the goddess with eyes that promise pain and suffering if I don't like her answer, causing Aqua to shiver at this.

"R-R-Right! You have two ch-choices, yo-u may either be reborn into the world you left behind, or you may go to heaven to live as an old man. But, just between you and me, heaven isn't as great as you mortals believe." Aqua stutter at first, but soon got her wit back near the end as she was planning something and remember the person before her is mortal and she can take care of him easy, even if whatever he did cause her to fear for her life for a brief moment.

"That's fine, I have no interest in heaven anyway." I replied while I find this situation funny. Because, really, I can go to heaven? Yup, I find this situation very funny and amusing as if someone, maybe this goddess before me, wanted me to do something in exchange for going to heaven.

"Starting over from the beginning isn't great either." Aqua continued.

And suddenly, I have the urge to maim this goddess.

Aqua leaned forward, her smile turning into a smirk, "So I have a special offer for you."

Oh? Maybe I won't have to maim this goddess after all if she one of those types of people.

"Are you familiar with a video game?" Aqua asks me.

This caused me to blank out for a moment.

Aqua rose from her seat and began striking poses, "A wonderful, peaceful kingdom beset by an evil Devil King and his army! Countless helpless people live in fear of their lives as their homes and families are threatened! They need someone to save them or else they'll be slaughtered!" A bright light fell on her as if she was suddenly on stage.

"How do you wish to be tortured?" I whisper coldly, shooting her an intense glare that would make an army of demons to be feared.

The goddess flinched under my cold glare, and like that, the light went off, "No! That world is really under that kind of threat! In fact, it's so bad that the population is declining because no one will agree to be reborn because they are so afraid of the Devil King. They die horribly painful deaths and decide they would rather just go to heaven."

Now I'm really sure something fishy about this, not to mention I shouldn't be able to die from food poisoning. Maybe it was something else that killed me.

Also, if there was such a problem, why were people even given a choice in this? Just about anyone who dies wants to go to heaven, because that's where their family and loved ones are. A few would prefer being reborn, then suddenly I remember that even a goddess can tell lies.

I narrow my eyes at this goddess and wonder what kind of trick she planning for me.

"So we figured that people died here could be sent there alive and ready to fight! That way people who died young could continue to live, where that world would gain fighters to fend off the Devil King and we wouldn't have to worry about depopulation. Everyone wins!" Aqua finished with a twirl and beamed at me.

Ah, I get the picture now. The offer of heaven or rebirth was likely meaningless, as it was a setup for this 'special offer'. Those who chose either heaven or rebirth would simply be reborn, as memories may not be carried over through rebirth and anyone who chooses heaven would simply be reborn unaware of their choice.

The goddess, I'm questioning if she is one at this point, was looking for me to solve a problem for her.

Funny, that I created a business to solve many cases with the help of demons to do so. But, even I know the contracts I made with those demons are destroyed upon my death, not to mention I don't have any [Grimoires] for me to use to summon a different demon to make a contract with.

"If you can revive me in a different world so easily, why don't you just kill the Devil King yourself? Or revive a local legendary hero instead? Why do you need me?" I ask these questions to this 'goddess'.

"Ah, goddesses like me can't interfere with the world like that, it's against the rules." Aqua answered, leaning forward and almost getting in my face, "Please, that world needs your help."

What a blatant lie, and delivered with such a serious face nonetheless. Reviving me is an entirely different world doesn't count as interfering? I find that false and really want to maim this 'goddess' before me. At this point, I may even treat her like those demons I've made contracts with and use her for my purpose. But, I may have to use a different method to do so.

I feel like this idiot hasn't read anything about me at all. If it were, those demons, they would do everything in their powers to serve me with their lives on the line while this 'goddess', and maybe other ones, wanted me to enter to some other world to kill the Devil King. Like I would do that, such a waste to kill off such a powerful being when I could use them for my goals. Thinking if I should head to the other world, but not too sure, because unlike my original world. I don't have any method to control the Devil King unless there a [Grimoire] for a Devil King laying around somewhere in that world to be used to tame the Devil King.

I didn't say anything and continue to stare at this fool, that called herself a goddess. In fact, I can feel some sort of energy inside her, but compared to many demons I have seen. It isn't that powerful.

Aqua seeing this, started to sweat a little, "If you decided to enter the other world, I'll grant you one boon! Here! You may choose what you wish to have!" She quickly hands over the book she had on her table over to this weird and creepy person before.

I raise an eyebrow at this and take the book, which has no cover on the front or back. Just like those hardcover journals for people to write in.

I start flipping a few pages, where I see some legendary artifacts, powerful weapons, special abilities, and various other things that were listed inside the book.

Something caught my eyes, then allow a small smile to appear on my face, causing the 'goddess' in question to shiver at this.

"How about this. You give me this... boon now and if I like it. I'll think about going to the other world." I calmly said to the goddess, who leaps from her chair with a big smile on her face.

I feel like this goddess wasn't that bright in the head.

Which was proven true, when the said goddess granted me my boon without even thinking I would betray her.

"There! Now I'll see you to the other world!" The goddess didn't even bother to wait for my response if I wanted to go or not.

Not taking this chance, I leap into action and directly punch the goddess in the stomach, causing her to violently cough out lots of blood everywhere.

"WHY?!" Aqua cried out in panic and wonder how such a mortal able to hurt her like this!

"Do you even know what you gave me?" I ask the goddess as I kick her in the face, sending her to the ground while breaking the goddess' nose, causing more blood to spill, then I stomp her on the stomach while she down, causing another painful shout and coughing out blood.

Aqua shook her head, all she wanted to do was granted whatever the person before her had in mind. But, if whatever boon he picked, must have been something powerful to hurt her, a goddess!

"I should have known. Anyway, I said I'll think about it, not a yes to being sent to another world. Also, I'll like to invoke the contract between us just now. You'll give me the boon and I'll think about if I like what I was given. Furthermore, you're not allowed, not even others can remove my boon unless I, in my free will without being under any effects, will give up my boon. And so, the contract is set." I quickly created a contract with my new power and enforce it onto this goddess before she can figure out what's going on.

Then a white paper appears in front of me, which was made out of flames for a few seconds before it becomes solid and with the paper itself being black as if the paper had been burnt, while the words are glowing blood-red like veins.

"Wh-What?! How do you have that power?!" Aqua cried out in horror as she saw this happen countless times as a goddess, and this is something big and very dangerous to have. Therefore, she is deadly pale and finally realize what a huge mistake she just has done, not to mention she listen to every single word the person before her said just now and could see other conditions on the contracts, much to her despair.

"You gave it to me, remember?" I smirk down at the goddess underneath my foot. "Now, if you desire my service. We can make another contract, this time, I won't force it onto you like I just did."

That's right, I picked the special ability: [Absolute Contract](1).

This was something I didn't think such a thing would exist. It's like a law, that would absolutely be enforced against the offender no matter what and is an unbreakable vow as well.

"What do you mean?! I gave what you wanted, why do I need to sign a contract in the first place?! Ah!" Aqua shout at me, then let out a grunt of pain when I apply pressure onto my foot I still have placed on the goddess' stomach.

"Oh, I'll just treat the boon you just gave me as payment for bringing my soul here without my permission." I knew where my soul would have gone if I had died, but to find myself here. Then someone must have dragged my soul here, along with my physical body, where I'm in right now, lucky me. As all the rituals I have done in the past hasn't gone to waste. Also, it's a good thing too because many other dangerous beings could have use my body for many evil purposes, that most likely doom mankind.

"So are you ready to form a contract with me in exchange for my service?" I smile in an evil way, as I look down on the goddess.

Aqua gulps in fear, learning that she's pretty much screwed.

A few hours later*

"Now, repeat the conditions and what's the contract for me." I said to Aqua, I deemed this girl unworthy of being called a goddess after a few hours of speaking with her. As I look at her from my seat with a bored look on my face.

Aqua flinches at the way I stare at her, but did ask was told.

List of Conditions:

1. Aqua, the goddess of water who guided humans to the afterlife, is to grant the other party a boon of their choosing in exchange for their service.

2. Aqua, the goddess of water who guided humans to the afterlife, is not allowed to interfere with the other party's method for their service.

3. Aqua, the goddess of water who guided humans to the afterlife, is not allowed to get others, be it a fellow god/goddess for their help in interfering with the other party's methods for their service.

4. Aqua, the goddess of water who guided humans to the afterlife, is not allowed, and others, from taking away the boon after giving it to the other party after fulfilling their side of the contract.

If any of these four conditions are broken in any way. Then, Aqua, the goddess of water who guided humans to the afterlife will have her soul devoured by the abyss and her divine power destroyed permanently.

Otherwise, the other party of this contract will fulfill their end no matter what, which is to defeat a Devil King.

The contract is invoked the moment, both Aqua, the goddess of water who guided humans to the afterlife and the other party sign the contract with their blood.

"Now, sign it." I order Aqua, who flinch once again and starting to become a common thing at this point. But, did as I told unless she wanted another beating.

Aqua let out a whimper as she made a small tiny cut on her thumb and press it onto the contract, which lights up in flames for a few seconds before settling down for the other party, me, to sign before the contract is complete and ready to be invoked.

I didn't flinch as I bite the tip of my index finger to draw blood and sign the contract as well, causing the contract to lights up in flames once more, but this time it burns until only a fireball in its place and split into two and went into Aqua and me.

"Now, that the contract has been signed. I will have you grant me the [Demon Summoning Program](2) as a system instead of using a [COMPs](3) with no restriction in place other than the bare basics to make it work. Make sure it includes anything that goes with the [Demon Summoning Program] and also includes the feature of [COMPs] into the system as well." I said to the scared Aqua, who quickly grant my boon.

Ding!*

The [Demon Summoning Program] from the universe of Megami Tensei has been successfully created a powerful connection with the host.

Once I got that, I bring up the features that belong to a common [COMPs] if everything there.

[List of Features]:

[Calls] - Able to connect any other devices or something similar to contact with others.

[Send/Receive Emails & Texts] - Able to send/receive any emails and texts from anywhere, where the system will connect to the local network.

[Creating Documents] - Allow the user to create blank documents to type in.

[Managing Info] - Give the user the ability to manage information. Ex. Schedules, addresses, etc.

[Camera] - Allow the user to take any picture via the user's eyes and be saved into the system and send it into the [Mangaing Info] tab.

[Clock] - Allow the user to keep track of local time.

[Calculator] - Give the user the ability to do the math.

[Quest Management] - Allow the user to take in [Quests] from others.

[Skill Management] - Allow the user to check on what [Skills] the user has and how to gain other [Skills].

[Item Management] - Allow the user to check on what the user has in their [Inventory].

[Party Management] - Allow the user to check what demonic entities to be used and summon into reality and return back into the system.

[Demon Summoning Program] - Able to summon demons from an entirely different realm.

[Cathedral of Shadows](4) - Able to perform a fusion(5) between demons to create a new one.

[Demon Analysis] - Able to check the stats of the demon and their strong and weak points.

[GPS] - Give the user the ability to find their way without being lost as long the user has been there before.

I raise an eyebrow at the last one; nonetheless, it's something good to have.

"Alright, the payment has been successfully delivered. You may send me to the other world now and I shall take 'care' of the Devil King for you." I said to Aqua, who looks like she was given the best gift in the world and quickly send me on my way.

As a [Magic Circle] appear the ground I'm standing and send me off, but I can't help notice the way Aqua started to panic for.

"WAIT! WAIT! WAIT! You're going the wrong way!" Aqua cried, much to my confusion on this. Then a flash of white light, causing me to close my eyes.

(Unknown Town)

"Huh, I expected to be in some sort of medieval era or some kind of fantasy world." I thought out loud, as I find myself in a modern-day day town. While it's night time, but that didn't mean I can't detect the presence belongs to a demon.

I frown and wonder if this world truly in danger of depopulation or even in a war with the Devil King or a demon with the rank of a King.

The first thing I need to do is summoning a demon to do my bidding. Then later begin one of my plans I have been dying to do for years.

But, before I do that, I must find a place with less open.

A few minutes later*

(Unknown Town: Abandoned Warehouse)

DING!*

[Demon Summoning Program] starting...

Please pick the following method to summon a demon:

1. Pay 100 Macca(6) for 1 summon.

2. Pay 1000 Magnetite(7) for 1 summon.

My eye started twitching, then check if I have either under my [Item Management] and found 1000 Macca and 1000 Magnetite. But, other than those two, I got nothing else. Hell, this suit I'm wearing is the only one.

Letting out a sigh and thinking about opening a detective agency here, since it provides me enough profit to live through while I was hunting down any [Grimoire] the moment I hear anything about it.

Thinking about it for a moment and decided to use the 1000 Magnetite instead of Macca. Seeing how it looks like the Macca is worth more than the Magnetite with the difference in price.

DING!*

The host has paid 1000 Magnetite to summon a demon.

Process in summoning...

I watch a [Magic Summoning Circle] appear in front of me as it lights up, then soon the place started shaking, causing me to raise an eyebrow at this and wonder if the demon I'm summoning is powerful to affect to the surrounding.

DING!*

A demon has answered your summoning.

Host, you have to find a method to tame this demon before the system will turn it into data and store away into the [Party Management] for the host figure a way to tame the demon later on before summoning it outside the system.

I raise an eyebrow at this and wonder how the previous users of the [Demon Summoning Program] manage to tame their summoned demons.

Nevertheless, I had the [Absolute Contract] in the first place for a reason.

I wait for the light to die out, to see what kind of demon I have summoned.

I narrow my eyes when I see the so-called demon. A moving snowman that looks like a jester.

"Hee-ho! Thanks for summoning me into this realm!" The talking snowman said to me in a childish voice as the temperature in the area started to lower, this made me smile a little because this means the talking snowman has a special ability as a demon.

"Hee-ho! As a thank for summoning me, I'll freeze you to death! Hee-ho! Isn't that a fair deal-GAH!" The talking snowman never got to finish his speech when I kicked him with no mercy, then started stomping on it.

"WHAT THE HELL?! WHY DOES IT HURT SO MUCH?! AH! STOP! STOP!" The talking snowman howl in pain.

I didn't say anything and continues to stomp on the talking snowman for a few minutes to see how long until it begs for mercy.

A few seconds later*

"Please! I'm begging you! Hee-ho! I'm willing to make a contract with you!" The talking snowman cried out, not even a minute passed by.

"Alright, but I'll make the contract." I stop attacking the talking snowman and create a contract from the [Absolute Contract] and present it for the demon to sign, where I can see its facial expression, that it just realize who summon it answered to.

"Oh, and don't think about trying to break the contract. Heh." I snort in amusement, "It won't end well for you." I smirk at the first demon among the army of demons I'll control over in the future.

Author Note: Here the list of a description for the term I've used in this chapter if anyone wanted to know about the term I used or something. I will place one of these whenever I think it is needed per chapter. Hope this helps. As it's something new for me to do.

1. [Absolute Contract] - The user can create and enforce any type of contract/pact with absolutely anything, even with themselves; dictating everyone's condition therein, including qualifiers in the event one-or-more of the parties would, or even could, somehow break the contract/pact. The conditions imposed by the contract/pact are absolute; and will always, inevitably, come to pass, no matter the conditions so dictated. The contract/pact cannot be negated, nullified or undone by any exterior force or being, save by the user.

2. [Demon Summoning Program] - The [Demon Summoning Program] was first featured in Digital Devil Story: Megami Tensei and plays an important role in the games it appears in as it allows for humans with the capability to utilize demons in battle as well as storing them away for later as data. It's usually utilized via portable computers called [COMPs] due to its convenience. Typically, the [Demon Summoning Program] works by using code to replicate a [Summoning Ritual]. This was elaborated on twice in Digital Devil Story and Devil Survivor.

3. [COMPs] - Also known as a [Arm Terminal], is a device commonly featured in the Megami Tensei franchise. It refers to the portable computer which many characters have used in order to communicate with, transport, and summon demonic entities using the [Demon Summoning Program]. It is one of the most common elements to appear in Megami Tensei games.

4. [Cathedral of Shadows] - Also known as the [Jakyou Manor] or [Heretic Mansion] in most translations, is the location (or in some cases, computer application] where a fusion of demons takes place in the core of Shin Megami Tensei games. The Cathedral usually contains several kinds of odd devices that are supervised by Mido, a head priest in blue. He offers services of using the comrade demons of a user with no charge (except in IMAGINE). Several factors can affect the outcome of fusion, such as the phases of the moon (or Kagutsuchi), the status of the user, as well as the demons currently under his control. The demons fused in the [Cathedral of Shadows] are bound by an unwritten law of subjugation, where the newly formed demon will only serve under a master of equal or greater strength. It's for this reason that the head priest will decline fusing demons if the result is beyond the current capabilities of the user.

5. [Fusion] - Fusion, or Union, is the system in which two or more demons are combined together to create a new demon. A demon created via this system will inherit certain traits and abilities from the "ingredient" demons that were used to create it. The exact nature of this inheritance varies by the types of demons used in the fusion, by the type of demon being created by the fusion, by the phase of the moon (or its equivalent), and by other factors that vary by game. The general rule for the most basic two-demon fusion is: a demon of race A fuses with a demon of race B, resulting in a demon of race C at level ((A's base level + B's base level)/2). But, there are many exceptions to this rule. Some demons cannot be recruited or captured normally, and must instead be created via special fusion. Some of these demons can only be fused once certain prerequisites have been met; for example, some bosses can only be fused once they have been defeated. In several games, demons can also be fused into weapons (usual swords), giving that gear, new abilities based on the abilities of the demon used in the fusion.

6. [Macca] - This is the standard currency used in games that do not use yen. It is the official currency used in the Expanse, minted by Lucifuge. The symbol for Macca is an 'h' with a line crossing the upper half of the neck, closely resembling the Cyrillic alphabet Tshe. The symbol also closely resembles the astrological symbol for Saturn, especially in Shin Megami Tensei III: Nocturne, where the "h" portion of the symbol is curved.

7. [Magnetite] - Magnetite is the living, mystical substance that demons' bodies are composed of in the physical world. Magnetite is a by-product of the physical world that is usually undetectable. Human bodies are the richest source of this mineral. In several series of games, Magnetite is used to summon demons. The Magnetite cost to summon a demon is based on its level, as well as various other factors, such as the summoner's level and any difference in alignment between the demon and its summoner. In games where Magnetite is used, it is almost always rewarded after combat alongside experience, money, and whatever other spoils may have been earned.