Beginning of Adventure

(Host has been detected using grimoire. Do you wish to learn <Gravity Magic>?)

A blue screen with a system prompt appeared in front of Zero as he concentrated his mind on the purple grimoire he had taken out of his Inventory. It was the first thing he did after they had left <Excalibur> and <Avalon> back in his mindscape.

'Yes' He thought within his head.

With the teen's confirmation, the grimoire dispersed into tiny purple particles which was afterwards absorbed in between his eyebrows. Immediately, Zero could feel a bunch of information about manipulating gravity and other aspects relating to it flowing into his head. The process wasn't painful but it did make the saiyan feel slightly dizzy, which was reflected by how he had almost tripped due to his unstable footing.

"Alright, now that that's out of the way, let's finally check what the shop has to offer."

The raven-haired teen didn't exactly have magic power at the moment, so it was pointless trying to test his newly received magic out. One thing was for certain though; the magic he had received from his predecessor wasn't going to be anything bad.

In fact, from the information Zero had already finished digesting on <Gravity Magic>, he realized that once he does possess magic power, the initial gravity he would be able to manipulate would be up to a whopping ten times of earth's gravity; and this was without any training.

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"Woah, everything's so expensive here."

Zero exclaimed.

After using the grimoire, Zero switched the System Interface from Inventory to the Shop and saw a few tabs to choose from: Potions, Weapons/Armor, Skills/Abilities and Miscellaneous. He also noticed his System Points down at the bottom right corner of the blue screen valued at 1,000,000 and wondered how much it was worth.

Turns out that it wasn't worth as much as he thought it did as the one million system points given by the Dimension God was only enough to get him a Rank B Noble Phantasm like <Gae Bolg>. A Rank's on the other hand cost 10,000,000 and EX Rank's for example, the <Hanging Gardens of Babylon>, that was worth a stunning 100,000,000.

Zero was even beginning to regret not choosing the <Hanging Gardens of Babylon> for his armament but when he recalled getting <Excalibur> and <Avalon>, his mood lightened up.

<Excalibur> was originally ranked at A++ and <Avalon> at EX but now that they were growth-type armaments, who knew what rank they were classified as. Not to mention, he was already lucky to have gotten two Noble Phantasms instead of one so he shouldn't be too greedy.

The Shop could be literally called an anime store. There were a variety of skills, weapons and other miscellaneous items that Zero knew from anime being sold here: Zanpakuto from Bleach, Magic from Fairy Tail, heck, even Erina's God Tongue from Shokugeki no Soma was present.

The teen was about to check every list under each tab to find anything interesting, but found out amazingly that just a single list in itself was long enough for him to shop for hours, so he gave up the foolish idea. There were just too many items, especially in the Weapons/Armor and Miscellaneous tab.

Fortunately, there was still a search and filter button at the top left hand corner of the screen, so if he ever wanted to buy or search for anything specifically, he would be able to find it with maximum efficiency.

[Isn't Master going to buy anything?]

Gaia asked from the side like a curious baby when she saw her Master return to the System Menu from the Shop Interface.

"Nah, I don't really need anything at the moment and everything that I want is too expensive so it is better to save the points in case of an emergency."

Zero sighed before speaking again.

"Still though, that god was so stingy… ouch! Hey, what was that for?"

The raven-haired teen shouted after getting kicked on the side of his head by an annoyed loli.

[Bad Master, stop saying bad things about the Creator behind his back.]

Gaia reprimanded with her hands on her hips.

"Eh… but he wouldn't know anyway… he's already d-"

He stopped mid sentence as the fairy gave him a look that said 'I dare you to finish that'.

"Okay; Okay… I won't say anything behind his back anymore."

Zero rolled his eyes.

[Mn, that is best.]

Gaia nodded her head sagely. The Dimension God was her Creator and technically her father so she wouldn't allow anyone to tarnish his reputation, even if he was no longer around.

"Nevertheless, I know he said he wouldn't give me too much but I didn't expect it to be so little."

He sighed with a little regret in his tone.

[Master, you're being too greedy! You're already lucky enough to even possess system points early on, not to mention that it isn't a little amount at all. You could buy at least 10 basic skills/abilities and there's also life-saving potions in the System Store that aren't expensive whatsoever. Just how much were you expecting anyway, Master?]

"Uh... at least 10 million?" Said the saiyan with a little uncertainty.

Gaia: "..."

The fairy only stared silently at her Master.

"Okay maybe that's a little too much…"

Zero scratched the back of his head in embarrassment.

"Haha… Anyways, let's just continue what we were doing before, shall we?"

[Whatever you say, Master.]

Gaia sighed in defeat when her Master decided to change the subject.

"Hmm… it seems I don't have any quests as of yet…"

The raven-haired teen thought aloud.

[That is natural as a quest only occurs when Master enters a world. From there, a quest with its corresponding reward will appear as Master either encounters something, or there is something in range that Master could happen to come across; it is then Master's decision whether to accept the quest or not. Lastly, the reward is calculated and generated by the System according to how difficult the quest is.]

Gaia explained.

"Fair enough." said Zero as he gazed at the remaining two system functions.

"Hmm… World Travel is pretty self-explanatory, so there isn't really a need to ask what that is. On the other hand, what's this Dungeon thing about?"

The teen turned to look at the fairy as he asked.

{A/N: For those that forgot what was listed in the System Menu, here's a quick recap. System Menu: Status, Inventory, Shop, Quest, Dungeon, World Travel.}

[The Dungeon is a separate Dimensional Space within the System which was created by the Creator, during the year he transferred his power onto Master, for the sole purpose of training and getting stronger.]

Gaia clarified with a sweet tone before she waved her hand at the system screen. Zero then saw the blue holographic screen display a list filled with numbers representing each floor in numerical order with a cost of system points next to them.

<Dungeon>:

[Floor 1 ~ 10] - 100 SP

[Floor 11 ~ 20] - 500 SP

[Floor 21 ~ 30] - 1,000 SP

[Floor 31 ~ 40] - 5,000 SP

[Floor 41 ~ 50] - 10.000 SP

[Floor 51 ~ 60] - 50,000 SP

[Floor 61 ~ 70 - 100,000 SP

[Floor 71 ~ 80] - 500,000 SP

[Floor 81 ~ 90] - 1,000,000 SP

[Floor 91 ~ 100] - 5,000,000 SP

[Floor ??? ~ ???]- ??? ??

The fairy then continued her explanation.

[As Master can see, there are a total of 100 floors present, with every 10 floors having either monsters or opponents representing each Realm.

So Dungeon Floors 1~10 would have Level 1 monsters… and Floors 11~20 would have Level 2… all the way until the 91st through to the 100th Floor where Master will be facing up against enemies of the 3rd Divine Realm.

Defeating any of these monsters, will allow Master to gain experience, both in terms of Level and fighting experience as every monster will have a variety of different skills and abilities, including a good amount of combat experience that Master can then take advantage of in order to sharpen his own skills.

But beware, as each Floor will also consist of a Floor Boss that will spawn in the Boss Area once Master has defeated it's minions/subordinates. The Floor Boss will have most of its subordinates' skills and possess far more combat ability along with a great enhancement in its endurance, further making it harder for Master to kill.

Lastly, the first time that Master enters the Dungeon will be free but every entry afterwards will cost you System Points depending on which floor you decide to enter. As for the subsequent Dungeon Floors, they are locked as of now as Master is unqualified to know.

Does Master happen to have any other questions?]

Gaia asked after she finished explaining the situation relating to the Dungeon.

Zero pondered for a bit before saying his thoughts.

"Not really, as I'm sure you've pretty much covered everything I wanted to ask, though I do have one thing that I wanted to know."

[Please say, Master.]

The fairy motioned for Zero to continue.

"Do these dungeon monsters respawn after I have killed them?"

[Of course they do, Master. The monsters killed inside the Dungeon respawn immediately after Master leaves. Also, Master can leave and enter the Dungeon at any time, but a fee still has to be paid upon every entry. Anything else?]

Gaia tilted her head to the side cutely as she finished. This time, Zero didn't hold back and pinched her left cheek with his right thumb and index finger. It was just too adorable!

"Hehe… thanks for explaining Gaia, but there's nothing else I want to know now."

Zero smiled as he placed the System Fairy onto his left palm and continued to play with her cheeks, poking it this time with his right pinky finger.

[Then please select a world to travel, Master. Mouu… Gaia's cheeks aren't meant to be played with.]

The fairy pouted with her arms crossed under her developed breasts in irritation.

"Haha okay; okay, I'll stop poking your cheeks. You're just so adorable I couldn't help myself."

The saiyan laughed and stopped what he was doing.

[Hmmph, you better… or Gaia will stop talking to you.]

Gaia harrumphed, turning her face away from Zero with a blush on her face when she heard his latter sentence.

"Will do, hehe."

He chuckled, before selecting World Travel with his mind and as expected, a System prompt had appeared again in front of his face.

(Host has selected <World Travel>. Which world does Host wish to go to?)

Zero had already long decided which world he wanted to go to from the time the Dimension God told that the dimension he was going to enter was comprised of all the various anime worlds from his previous one.

He thought that it would be a nice world to start off with as it was in a location strikingly similar to his home world, along with the fact that there were different races of supernatural beings consisting of Gods, Devils, Angels, Dragons, etc, hidden behind the scenes. It was perfect for his first adventure.

The raven-haired teen smirked as he thought of all his favourite characters in that world before voicing his answer.

"Please take me to the world of <Highschool DxD>."

And everything turned black for our protagonist after that.

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"Ugh… where am I?"

Zero opened his eyes to an unfamiliar ceiling.

The teen was currently lying on a bed, feeling refreshed as if he had just woken up from a long sleep. All the memories from beforehand came clear to him as well.

All of a sudden, Zero sat upright and quickly checked his surroundings for something.

"Was all that just a dream… it can't be. Hey Gaia! Are you there?!" He yelled.

[Gaia is always here, Master. What is it that you need?]

A tiny blonde-haired girl dressed in a light green dress appeared floating in front of Zero's face as she answered her Master's call.

"Ah, nothing. I was just checking if you were there, just in case everything that happened beforehand was just a dream."

Zero sighed with relief.

[Master, if you wanted to check if it was a dream… why not just open the System Menu… or maybe you could've just checked if your tail was still there.]

Gaia pointed to the saiyan's tail which was still attached to him as she stared at him with a deadpan.

"Right, how come I didn't think of that? Well whatever, not everyone's perfect."

The teen said, to which the fairy just rolled her eyes in return.

"Anyway, where is this place?"

Zero pondered as he inspected his surroundings properly this time. After a while, the black-haired teen realized that he was currently in some sort of apartment.

The bed he was sitting on was placed in the top-left corner of the room and next to it on the right, Zero noticed a simple work desk where a laptop was placed.

The center of the room occupied two wooden chairs surrounding a small round table with a variety of tableware positioned neatly on top. A small kitchen and refrigerator was seen connected to the wall on the side and further down were the entrances to the bathroom and restroom.

There were also other things in the room, as the teen also saw a sofa and wardrobe. All in all, it was an orderly, simple apartment complete with various types of furniture and appliances large enough for a single resident to live in.

[Master, we are currently in the world you had chosen, located in a place called Japan. The apartment we are in currently is something that the System had set up for Master in order for him to be able to blend in with this world's ordinary inhabitants easier while at the same time without having to alert any supernatural beings.]

Gaia replied with a sweet voice which made her Master close his eyes in order to listen to the soothing tone that came with it. No matter how many times he would hear her voice, Zero could swear that he would never be bored of it.

"Well? The System has that function too? Pretty sweet. At least I don't have to be homeless now. Say... speaking of Japan, isn't this place where the 'plot' starts? Hey Gaia, do you happen to know what timeline we arrived in?"

Zero asked curiously. He hoped to have arrived early, if not around the same time as when canon had started. It'd be a shame to miss out on all the fun if he arrived later.

[Reporting to Master, the timeline we have arrived in is about seven years before 'canon'.]

The blonde loli stated as she continued to float in front of Zero.

"Sweet! That means that there's heaps of time to train. Gaia, what realm do I have to reach in order to at least guarantee my survival in this world?"

[Master needs to at least reach the level of Super Saiyan; In other words, the 3rd Mortal Realm.]

Gaia replied sternly.

"Eh?! I have to at least reach Super Saiyan?! What the heck. Even with only 530,000 battle power, Frieza was able to blow up planets, wouldn't I be able to do the same to this one if I only reached the peak of first level?"

Zero asked in utter astonishment.

[Master, you have to stop comparing different worlds with one another. This planet is much denser than you think and the supernaturals residing here aren't as weak as you thought they were. Becoming a Super Saiyan only allows you to be on par with the Super Devils and Heavenly Dragons.]

'Damn, I think I might have taken this too lightly. Reality is much different from the anime. Actually, how could I not have thought of it sooner. In this world, with so many supernaturals fighting here and there, it is already a surprise that the Earth could still hold up from all the destruction. This planet might be on the same density as the Supreme Kai's planet from Dragon Ball.'

The teen thought mentally.

"Eh… I might've fucked up on my decision to come here."

Zero murmured to himself, though Gaia who was close to him still heard him loud and clear.

[Don't worry Master, although you currently don't meet the requirements to access <World Travel>, you still have plenty of time to train as you've mentioned before.]

The fairy comforted.

"Right… there's still seven years… Seven years… is enough!"

Zero's eyes burned with a desire to get stronger.

If Son Goku was able to go from a 400 power-level low-class saiyan to a Super Saiyan with 150,000,000 power-level in less than 2 years, why couldn't he do the same? He was also a saiyan, with a similar starting point.

To top it all off, Zero knew the proper way a saiyan should train and how to utilize their zenkai boosts to their maximum potential, so it became even more likely that he would achieve the Super Saiyan transformation just as fast, if not faster than his childhood idol.

"Alright! It's time to hit the Dungeon! I gotta make use of all the time I have to get stronger or else there's no telling what would happen to me once I enter the supernatural world. There are too many in this world who lurk in the shadows and I'm neither intelligent nor experienced enough to avoid all of their devious plans. Which brings me down to the final and most reassuring option left: possessing the absolute strength to overcome everything that comes in between my path."

Exclaimed the saiyan as he quickly hopped off the bed, preparing to call up the System Menu.

It might've been due to the fact that he had fallen unconscious for a while back when entering this world and had thereby gotten some sleep, but now that he was wide awake coupled with his urgency to get stronger, he felt so refreshed that he wanted to start training immediately.

But there was still one thing Zero forgot apparently...

'Growwwwwl' A loud noise suddenly sounded within the room.

… and that was his stomach which hadn't been given a meal for a while now.

"Ha ha… maybe I should start training later and find something to eat first…"

[Hehehe, Master… that was too funny… hehehehe… oh my, it's starting to hurt… hahahaha.]

Gaia rolled around in the air laughing, clutching her stomach in pain as the saiyan was left scratching the back of his head with an embarrassed expression plastered on his face.

And that, was the beginning of Zero's adventure in the Multidimensional Universe.