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THE LEGENDARY TRAVELER WITH SYSTEM (DxD/Multiverse)
Chapter 1: Is My Mother Zatanna Zatara?

Chapter 1: Is My Mother Zatanna Zatara?

"Happy Birthday to You..."

Zaydas heard voices in the background. They were voices he was familiar with; however, they grew increasingly quieter until there was complete silence.

In Zaydas's mind, memories of an entire lifetime flashed before his eyes. Eighteen long years in the blink of an eye.

'What is all this? What's happening to me?'

He opened his mouth, but no voice came out. He looked around, appearing confused, while his mother, father, and relatives smiled as they seemed to be singing "Happy Birthday."

It felt like drowning—sounds growing more silent and vision blurring.

When he thought he was about to faint, the memories of 18 years, which felt strangely familiar to him, stopped flashing before his eyes, and the sound began to return.

"Happy..."

Zaydas forced a smile, even though his mind was in chaos.

"Happy 18th birthday, Zay!"

A round of applause echoed.

"Make a wish, son."

Looking at his father, Sirzechs Grimmory, he thought about the man who had appeared in the memories he had mysteriously received of another life in another world, where the world he lived in was merely a light novel tale.

'Is my father Sirzechs Lucifer?'

Zaydas looked at his aunt, not far away.

Rias Grimmory. She looked the same, with the only difference being her surname.

Although he had known he was a Devil from an early age, he never imagined he could have such a powerful family lineage.

His father had told him there was a connection between the Gremory and Bael Clans. And the reason he mentioned it when Zaydas was 16 years old, during his trip to the Underworld, must have been because he could use the Power of Destruction.

'Is this real?'

"Blow out the candles, son!"

His mother Zatanna's voice pulled him from his reverie.

"Come on, Zay-kun, don't keep us waiting~" Rias said with a smile.

Although full of unanswered questions, he set them aside for now and blew out the candles.

***

***

When had he fallen asleep?

Waking up confused, Zaydas began to recall everything that had happened the day before.

The memories of an entire lifetime of 18 years were still vividly intertwined in his mind.

'That life... Was it me?'

He came to this understanding because of the singularity the two shared.

Although the memories were of a normal human being without powers, in a world where apparently Angels and Devils didn't exist, the actions and choices were very similar to what he would have done in such situations.

The fact that he had died of cancer (if it was really him)... left him a bit sad. But in this life, he wouldn't have to worry about such things, as although he was half-Devil and half-human, he was essentially free from diseases with an almost infinite lifespan.

'But if it's like what happened in the anime, this world is incredibly dangerous!'

It's impossible not to worry about that.

Knowing things from a general perspective is one thing; having read the light novel and knowing about the existence of something like Trihexa is another.

But there were some differences from the light novel that he could notice. For example, his aunt Rias, as far as he knew, wasn't engaged to Riser Phenex.

However, this might also have been kept hidden from him.

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Another thing, as far as he knew, he didn't have a younger brother named Millicas Gremory. After all, although he knew Grayfia, his father had no romantic relationship with her.

And, would he dare? Zatanna, his mother, could instill fear in his father in a way that was hard to imagine—this was still Sirzechs Lucifer, after all.

While he worried about the unknown and the differences between his world and the Light Novel High School DxD, something strange happened!

[Host 100% compatible found! Would you like to bind to the Conquest System?]

An androgynous voice echoed in his mind.

[Warning! Nothing is required or charged, but nothing comes for free. Your conquest is my conquest; your achievements are my achievements. My form of existence is that of a superior parasitic type. I can only prove my existence if I find a compatible Host. And the moment the bond is formed, I will cease to exist, and we will exist together. Do you wish to proceed?]

'Cease to exist to become part of me? A parasite? Will it be like a part of my body, like my heart?' Zaydas thought.

[Responding. Yes, exactly. My sole purpose of existence is to prove my existence and integrate with a compatible Host. Even though in essence I will cease to exist, I will still exist as long as you live!]

'I see... So, your function will be to become part of me. In this case, you'll become a corresponding organ—the consciousness of the Conquest System?'

[Responding! Not exactly. Even though there are answers like a standard system you know, similar to the "Great Sage" from That Time I Got Reincarnated as a Slime, it will be more like you responding to yourself. Simply put, like a dual personality that will serve as your primary anchor to the Conquest System.]

'A dual personality, huh...' Zaydas automatically thought of the other "him" in his past life. If it's really the case, even though it essentially seems to be him, it could very well be seen as a separate personality. Thus, it would be as if he had three separate personalities, with one functioning as the assistant linking him to the Conquest System.

With all this in mind, Zaydas declared, "Yes, I accept!"

[Welcome to the Conquest System, Host Zaydas. The very fact of being chosen by the Conquest System grants the Host a [Starter Pack]. Would you like to open it now?]

The voice changed. It became similar to the voice from his other life as Reiji. It was a bit deep, like that of a radio announcer.

'Yes,' he murmured.

[Alert! Congratulations, Host! You have received the unique and powerful ability: [Dimensional Leap] and 500 Conquest Points!]

When he gained the unique ability, Dimensional Leap, Zaydas felt something within him begin to change. Although not by much, even his own power increased slightly.

'Explain to me in more detail how these Conquest Points work,' Zaydas demanded in his mind.

By the way, a little late, but the moment the bond was completed, it was just as the "Conquest System" had said. Even though it seemed like two separate entities, at the same time, he felt it as part of him, responding to his commands. It was quite strange but not entirely unfamiliar. It was similar to the Power of Destruction he was learning to use. It belonged to him, but sometimes it wasn't under his control.

Although in the case of the "Conquest System," being something superior, perhaps... Since it has a certain degree of intelligence, it was easier to control and command.

The system's deep voice echoed in Zaydas's mind, explaining everything he wanted to know.

'To earn Conquest Points (CP), I just need to do something worth recording? As a half-Devil and human, as well as the son of Sirzechs Lucifer, won't it be easy to accumulate CP?!'

[Warning! CP is very close to the energy of creation. As long as there is enough CP, anything the Host desires will be possible to create or replicate. Whether it exists or not. As long as the creation is plausible, nothing is impossible—even if it is something alive.]

That last part of the introduction was a little dangerous...

But this only explains the functions, not a requirement. If he doesn't want to create something alive, he won't, simple as that.

'Wow! This is more incredible than I thought...!'

Of course, he realized minutes later that it wasn't that simple.

Depending on what he wanted to spend CP on, the amount required would increase.

Moreover, if it was to create something from scratch, there was a percentage chance of success.

For example, he tried to see if it was possible to create a notebook capable of accessing the internet across the entire universe. It was possible, but the success rate was: 0.01%, and it cost 100,000 CP.

Why did he want to find out if something like this could be created? Very simple, actually. If he had an immortal life, wouldn't there be moments when he would get bored?

Even if not now, he believed that in the future, he might, so he wanted to find a form of entertainment. Just imagine having access to all kinds of internet in the universe! If there are many galaxies with forms of intelligence, there must be countless forms of entertainment!

A good example is the world of "Reiji." Although some movies and anime were also created in this world, there are many that were not.

But that wasn't something to worry too much about now. For now, Zaydas wanted to test this new ability he had acquired.

'Will it be dangerous if I use "Dimensional Leap"?' Zaydas asked.

[Responding. You can choose the level of danger between worlds before using this ability with my help. Currently, there are three possible options: Normal Rank, Medium Rank, and High Rank.]

'One question, what would be the classification of my current world?'

[Responding. Superior to High Rank.]

'Can I choose which world I'll go to?'

[Responding. No, it is done randomly with the world that has the highest link. Only by creating a link with a world can you travel to the corresponding world. Since you are currently only linked to your world, you will be sent to a world with the strongest link, probably something more urban.]

'Can I return whenever I want?' Zaydas asked.

[Responding. Yes, as long as you have enough demonic power, it is possible.]

'In other words, if I go to another world and don't run out of demonic power, I'll be able to return. On the other hand, if I end up using all my power in some kind of conflict, I'll have to wait until my power recharges. Is that correct?'

[Responding. Yes and no. If you wish, you can use CP to recharge your power faster or even use CP directly to return.]

'Okay, I think I understand everything I wanted to know,' Zaydas said. 'By the way, is there something like a status screen? If so, show me.'

[Affirmative!]

───────────

| Name: [Zaydas Grimmory]

| Race: [Hybrid: Devil/Meta-human]

| Rank: [High-Level Devil]

| Title: [Count]

| Powers: [Power of Destruction (Rank A)], [Demonic Power (A)], [Dimensional Leap (Rank S)], [Master Mage (?) Locked]

| Conquest Points (CP): [500]

───────────

'Meta-human, not human?' Zaydas thought. 'And that locked ability, Master Mage... Did that come from my father? Now that I think about it, my mother's name feels familiar from Reiji's memories...'

[Warning! It is possible that the Host's mother is Zatanna Zatara. If so, it is understandable that your description is not human but rather meta-human.]

'Wait... Isn't she from DC?' This startled him, to say the least. 'If my mother is really Zatanna Zatara, then... Was she also hiding her true identity from me? By the way, why have I never heard about Superman or any other kind of superhero if that's the case?'

At this moment, he didn't know how to feel.

But could he blame them? I mean, he didn't plan to tell anyone about the Conquest System. And possibly never would. He might even admit he could travel between worlds—something Zatanna Zatara could likely do easily—but as for the functions of the Conquest System and other details, he intended to keep it secret.

[Responding. As you might imagine, if your mother is truly Zatanna Zatara, there is a high chance she arrived in this dimension. That could explain why there are no reports of DC superheroes in your world.]

After hearing this, Zaydas agreed with this line of reasoning. Clapping his hands against his face, Zaydas said in his mind: 'Another question. Is it possible to unlock the "Master Mage" power, and if so, how much would it cost?'

[Responding. It can be done in 10 stages or all at once. In ten stages, there are a total of 10 gates. Each gate unlocks part of the "Master Mage" power and synchronizes it to avoid conflicts with your Demonic Power. The first key for the first gate costs 1,000 CP, and the cost doubles with each subsequent gate. Alternatively, you can accumulate 1,000,000 CP and unlock it completely at once.]

'If I unlock it gradually, it will cost... 1,023,000 CP. And while the cost of unlocking it all at once is slightly cheaper, it's not at a level that makes waiting worth it...' Zaydas thought. 'Alright, I'll follow the gradual unlocking approach.'

Thinking of something, he mentally asked: 'Okay, one last question... Will I face life-threatening risks in a Medium Rank world?'

[Responding. Your current power will be among the top in some worlds with this classification. However, there is still a chance of danger if you confront those at the top of the Medium Rank worlds.]

'Got it. Then I wish to go to a Medium Rank world.'

While going to a Normal Rank world would be safer, where's the fun in that? Besides, he could always return whenever he wanted using "Dimensional Leap," right? There was no reason to be overly cautious. He should at least face some challenges.

[Affirmative! Processing protocols, adjusting return coordinates, and searching for a connection to a Medium Rank world...]

[Successful!]

[WARNING! You are about to cross the portal to another dimension and may feel some nausea and dizziness. Prepare yourself!]

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