Lost in thought, Morax Astaroth leaned over the obsidian balustrade of his mansion's balcony. The breeze, laden with the enigmatic essence of the realm, gently stirred his green poplar hair. His blue eyes, bright as freshly cut sapphires, observed with a calculating gaze the dance of shadows and lights across the landscape below.

His attire consisted of an immaculate white overcoat, contrasting with the dark clothes he wore underneath. The ethereal light of the Underworld lent a silvery glow to his outfit's adornments, standing out against his pale skin with a supernatural elegance.

That morning, as the Underworld awoke to another day of schemes and power struggles, Morax remained immersed in his own contemplative stillness.

Had he ever considered the possibility of restarting his life from the beginning as a blank page, yet with his memories intact?

Morax had experienced this situation at least twice. Although he could only remember his past lives as if watching a movie, seeing himself in the third person.

However, this brought several advantages. One of them was the ability to foresee the future of the world he lived in.

In his existence as Staz Charlie Blood, he was a fan of anime, manga, and novels. One of the stories he followed was called "High School DxD".

Despite being narrated by the character Issei Hyoudou, Morax noticed essential details that enabled him to use this information to his advantage... Among these details, he discovered that, in a way, he should not exist in this world, or rather, he had taken the place of someone else when reborn in this world.

While these thoughts swirled in his mind, a soft voice interrupted his reflections...

"Morax-sama, why such a thoughtful expression?"

"Huh?", he murmured, turning around with a reflective smile.

A charming ten-year-old girl, with white hair and golden eyes, appeared before him in a one-piece white dress that made her look adorable. As usual, he extended his hand toward the girl's head.

Feeling the gentle pat on her head, the girl meowed softly, brimming with joy.

"I'm reflecting on something, but don't worry, it's nothing serious," said Morax. "By the way, where is your older sister?"

"Onee-sama..." She paused, thoughtful. "She must be at that place again."

"She went there again?" Morax smiled lightly. "Seems she really has a fondness for that mountain, doesn't she?"

"Yes, yes, definitely." The white-haired girl agreed, showing a pair of cat ears and an extremely charming expression.

"Shirone, are you hungry?" Morax asked, and seeing her nod, he instructed: "Then go call your older sister."

"Yes-nyah!" Shirone responded in an animated tone and ran off.

Morax shook his head, smiling subtly, and headed to the dining room.

"Morax-sama!"

As he entered, three maids approached respectfully.

"Mm," Morax replied. "You can prepare breakfast for three."

"Of course," one of the maids replied, then asked, "Any special requests?"

"No, the usual is fine," Morax replied.

"Understood." After saying this, the maid headed to the door.

Meanwhile, the other maids began to arrange the dining room.

While waiting, Morax lost himself in thought again, reflecting on how his actions had altered the original plot and the changes he caused.

Remembering the lessons learned while he was Madara Uchiha brought him great advantages...

Lost in his thoughts, he let out a spontaneous laugh.

However, he almost choked when he saw something astonishing before him.

Letters floated in the air as if by magic.

[System Integration with User Existence 99%... 100%]

As soon as they reached 100%, the letters disappeared.

This event reminded him of his past life as Staz Charlie Blood, from the typical novels he read where the protagonist had a System.

Morax paused, the perplexity in his eyes revealing the internal turmoil caused by his fragmented memories.

"Could it be what I'm thinking?" Morax wondered, casting a suspicious glance around.

However, all he saw were two maids looking at him in a somewhat peculiar way. Probably, his sudden laughter caused some strangeness, but besides that, he noticed nothing unusual about them or anyone trying to play a trick on him.

[System Initialized.]

[Select the target world: [Highschool of the Dead (100%)] – [Naruto (70%)] – [Dragon Ball Z (50%)] – [Fairy Tail (50%)] – [One Piece (40%)] – [One-Punch Man (40%)] – [Beelzebub (40%)]

[Current chances: 1]

Morax frowned, trying to understand what was happening. He tried to disperse the floating letters, but realized he couldn't touch them with his hands, and they followed the movement of his head.

However, almost by accident, he almost selected the [Beelzebub] option.

But what if this was something crucial? If it was extremely beneficial to him, and having only one attempt, considering that he only had a 40% chance of success with the world of [One-Punch Man], could he miss this opportunity without fully understanding what it meant?

After several attempts, he still couldn't find information that would clarify exactly what he was dealing with.

He was uncertain about which would be the best choice and what would happen if he made a correct selection.

Would he be transported to that world if he chose one of them?

Honestly, the world Morax most identified with was [Naruto], where he had already lived as Madara. However, he didn't want to abandon his current life, which he was very satisfied with. But what if it was something different?

"..."

However, this choice could determine a completely different direction in his life. Could he really choose something like that?

He then decided to ignore this floating holographic page.

[System Introduction:]

[By selecting one of these worlds and successfully establishing a connection, the host can choose an individual from that world to be the first User under his command. These Users, by extracting something from their own world, can gain EP/Extraction Points. EP can be used to exchange for items or knowledge with the System.

[As the System's Host, you will have additional benefits, as you decide what the Users can access and even create special missions for them, offering rewards as you wish, or letting the system determine the value of the reward generated by the mission. Moreover, everything that the Users extract in EP, the Host receives 10% or can choose to buy with his own EP at a more affordable price. Each item extracted by the Users chosen by the Host will be retained in the extraction space for 24 hours per item. After this period, each item is completely converted into EP, and the Host will no longer be able to acquire it at the more affordable price.]

[You have two special talents: "Incubation" and "Growth." With "Incubation," the Host can make any item, including talents, have a chance to evolve. It works as follows: if the Host incubates a Rank G sword, there is a point meter to be filled to keep the item incubated. The more points used, the higher the probability of evolution, up to 100%. The Host can also use special items for evolution, like a fire lizard tail worth 100 points and offering a 50% chance of evolution.]

[Using your "Growth" talent, the Host can learn techniques, skills, and other talents more quickly, accumulating training experience points and constantly evolving. Later, the Host has the option of selling these acquired talents to the selected Users. For example, if the Host improves a sword skill to Rank B and extracts that skill in the system, he will receive X points. However, the Host can choose to offer it in a User's store for a slightly higher price.]

After absorbing all this information, Morax felt less confused and worried. Reflecting on his memories, particularly his experiences as Staz, he chose [Highschool of the Dead], a world in which he was 100% sure he could establish a successful connection, as he saw the previous page reappear.

[The Host has selected the world: [Highschool of the Dead] – Congratulations, the Host has successfully established a connection with the world [Highschool of the Dead]!]

[Select the target user: [Takashi's Group:] – [Shido's Group:] – [Other Characters].]

Upon selecting [Takashi's Group], eleven character options appeared on the screen.

However, he didn't make an immediate choice. It was necessary to better understand what this decision would mean for him.

Among the available characters, one girl in particular caught Morax's attention.

'It seems I am selecting a user who will bring me benefits and, in the same way, I will provide advantages to her...' Morax reflected.

After some thought, he made his decision.

[The Host has selected his first user: [Saeko Busujima]!]

[Please wait for the confirmation of the user [Saeko Busujima].]

Under a blue sky, contrasting with the serenity of the past, the known world began to crumble. The school corridors, once full of youthful dreams and trivialities, suddenly transformed into scenes of nightmare and despair.

Saeko, notable for her swordsmanship and almost ethereal calmness, was in a Dojo.

With her long, shiny, purple hair falling to her thighs and bangs almost touching the tip of her nose, intense blue eyes, and a stature imposing by Japanese standards, Saeko stood out. Her slender limbs amplified the strength of her sword strikes.

"What's happening?"

She heard cries for help echoing from the school's sound system.

Still with her sword sheathed, Saeko intended to leave the Dojo.

However, before she could fully exit, she was surprised by an unexpected appearance, accompanied by a deep, soothing male voice, conveying authority and trust.

[Congratulations! You have been chosen as the First User of the Extraction System!]

[Introduction: By accepting, you will have access to the Extraction System; as the name suggests, you can extract what belongs to you to the system and exchange it for useful items in the System Store. Additionally, missions may appear offering the chance to acquire special rewards.]

[Do You Wish to Accept [Yes] / [No]?]

Faced with the floating holographic page and the unknown voice, Saeko was visibly confused but maintained her impassive demeanor.

Without making an immediate choice, she opened the Dojo door and left.

The school, now a labyrinth of terror, revealed itself to be just the beginning of an even more terrifying reality. Around her, colleagues and teachers transformed into hungry creatures, like something out of a zombie horror movie.

In this new world, every choice was crucial; every step could be the last.

Turning her gaze to the holographic screen, Saeko decided to opt for [Yes].