Chapter 1: My Sister is Grayfia
The Underworld — the place in legend where demons, fallen angels, and many spirits and ghouls reside.
Inside a magnificent ancient castle.
"Hah... hah..."
A young man was working hard in the courtyard, swinging his sword.
"Nine thousand nine hundred ninety-seven... nine thousand nine hundred ninety-eight... nine thousand nine hundred ninety-nine... Ten thousand!"
"Huff... huff..."
The young man set down the longsword in his hand, wiped the sweat from his forehead, and gasped continuously for breath.
The already sixteen-year-old young man had a head of silver-white short hair, and a pair of bright black eyes.
Although that handsome and good-looking face still carried a hint of youthfulness, his body carried a thread of steadiness and composure that should not belong to someone of this age.
"Roy must not slack off! Today you must swing the sword one hundred thousand times!"
A cool and serious voice rang out behind him.
"Understood, Sister!"
Roy nodded helplessly.
"Honestly, every time during training you are this serious, not cute at all."
Roy muttered a few words and continued swinging his sword.
Roy was a transmigrator. How he crossed over could no longer be investigated. His current name was "Roy Lucifuge."
When he first arrived in this world, he was still somewhat doubtful.
But after several years of being in this world, Roy had already fully confirmed it.
This world that had given him a new life was precisely the world of High School DxD.
Demons, fallen angels, monster spirits, angels... even dragons and gods.
These existences that should have only existed in fantasy were all real in this world.
And the person who had just spoken was his sister, named Grayfia Lucifuge.
She was precisely the retainer of the Demon King Lucifer in the original work — called the strongest Queen among all retainers in the Underworld, nicknamed the Silver-Haired Queen of Annihilation.
However, she was no longer the Queen of Demon King Lucifer now.
Grayfia was born outside the sequence, from the prestigious Lucifuge clan among demon noble families — a clan that had served for generations as the trusted confidants of the old Demon King Lucifer.
During the demon reform, she had once served as a member of the old Demon King faction and fought against the reform faction, ultimately competing with Demon King Serafall for the seat of the strongest female demon.
Although the competition was lost, her power had already reached Demon King level.
This also caused the Lucifuge clan to become a powerful demon family in the Underworld, and to separate from the Lucifer clan.
However, the entire Lucifuge clan, also due to the reason of fighting against the reform faction, now had only two members left.
And Roy was the last male of the Lucifuge clan.
Originally Roy had thought that, being born into a prestigious demon noble family and having such a powerful sister, he would certainly be able to possess powerful strength, to stomp all the great Demon Kings underfoot, and take all the girls he liked as his retainers.
In this regard, Riser Phoenix could be said to be the role model for all demons.
However, ideals are beautiful, but reality is cruel.
As the last heir of the Lucifuge clan, Roy did not possess powerful cultivation talent.
Even though he had worked hard in cultivation for over ten years, right now he was only at the power level of a low-class demon.
Look at Rias and Sona of the same age — they had long since reached the power level of high-class demons.
This kind of talent even made him himself want to give up cultivation. However, his sister Grayfia had not given up on him.
She still strictly supervised him every day to complete his training.
And it was precisely because of this that Roy's reputation as a good-for-nothing spread through the Underworld.
But he didn't care about it.
"Ninety-nine thousand nine hundred ninety-seven... ninety-nine thousand nine hundred ninety-eight... ninety-nine thousand nine hundred ninety-nine... One hundred thousand!"
"Huff... huff..."
"The sword-swinging training is finally complete!"
Roy's two hands trembling, he bent over and braced his knees, beads of sweat falling down his face — he had no time at all to wipe it.
However this was only the beginning of a single day's training.
"Roy, rest a little first! In a moment we'll begin studying magic!"
Grayfia, looking at Roy working so hard, finally revealed a trace of a smile.
"Huff... Understood, Sister!"
Hearing that he could rest for a bit, Roy finally slumped down exhausted onto the ground.
After resting for a while, next came the time for studying magic.
However under his kind of good-for-nothing talent, over so many years he had only learned a few basic magic spells.
For example, teleportation circles, memory erasure, magic bullets, healing magic, and the most important contract magic, and so on.
In order to form a contract with retainers or familiars, one must use contract magic.
Of course, to take on retainers one also needs demon chess pieces.
High School DxD was a very wonderful world. Although humans made up the majority of this world, only Demon Kings and gods were the rulers of this world.
Of course above them there was also Ophis, referred to as the Infinite Dragon God, and also the True Red Dragon God Emperor — the dragon referred to as the Great Red.
These were existences standing at the very ceiling of this world.
Such a wonderful world — Roy was naturally unwilling to be ordinary. Letting the girls he liked fall into someone else's arms was something he absolutely could not do.
Since he was unwilling to be ordinary, then let it be magnificent and earth-shaking!
Without talent for cultivating magic, then earnestly cultivate swordsmanship.
When other children were playing, he was training.
When others were resting, he was still training.
And it was precisely because of this mad drive that his swordsmanship had been cultivated to great mastery.
Speaking of swordsmanship alone, he was confident that no one in this world was his match.
His past self had only been an ordinary person, but since he had come to this dangerous yet wonderful world, of course he had to realize his own dreams.
And in order to realize his dreams, powerful strength was necessary.
(PS: A new author with a new book! Please give flowers, ratings, reviews, and triple support!Your support is the author's motivation!On the first day of the new book's release, no fewer than twenty thousand characters will be published. Please support with triple support — love you all! Mwah!By the way, the author has the uncut version of DxD volumes 1-4!)