(Not a cool story, the main plot, don't read if you don't like it!) There are twists and turns in the early relationship, and there will be explanations in the middle and late stages. Don't read if you only like cool stories. If you come in, you don't have the patience, so why come in! Slytherin from the Muggle world, Gryffindor, who is also a childhood sweetheart from the Muggle world, and there is also a Potter beside her. Looking at the three people below, Snape fell into deep thought, are you going to kill me? This is a magical world, and the protagonist is a soul from the 21st century. How can he not know the greatness of science? Then, what kind of sparks can the combination of magic and science splash out? This is a story about a protagonist who is a little bit second-year, and is pushed to the position of the Dark Lord step by step by his good friend! The most important point is that Hermione fits the original character, and her character is not likable. If you like the kind of vase Hermione, please don't come in! ! !

【Reincarnated as Dudley Dursley + Power of Logic & Strength + Fixing Canon Regrets + Power-Up via Magic Item Fusion + Straight Talker (Honest and Open Schemer) + Light System (Low Presence) + No Female Lead】

A bold and street-smart man from Blue Star reincarnates into a parallel Harry Potter world…

…as none other than Harry’s infamous Muggle cousin—Dudley Dursley.

By fixing key regrets in the original story, Dudley earns the right to fuse magical items, cleverly balancing brute force and sharp reasoning, evolving from a simple Muggle into a Concept-Level Archmage.

From there—

The Savior’s dark childhood is lit by a light so twisted it loops back to righteous.

The half-giant’s beloved dream of dragon-riding becomes reality, soaring over the Forbidden Forest.

The sweet-toothed old bee (Dumbledore) stops doing faith leaps from Astronomy Tower.

The prideful little dragon (Draco) embarks on a new path of growth, with friendship taking center stage.

The venom-spitting bat (Snape) is no longer misunderstood, but ends up tasting an even deadlier venom himself.

The pink toad (Umbridge)… actually becomes a literal pink toad.

Hogwarts undergoes sweeping educational reform.

The deeply cherished dead return from beyond the Veil.

And the brutal war that didn’t even spare the birds becomes a one-sided steamroll—with full counterattacks stacked to the max.

Matthew traveled to "Harry Potter", only to find that the world was facing the invasion of various foreign evil gods:

The "Dimensional Devil" that rules purgatory, the "Eyes of the Abyss" that dominate the spirit world, the "Paradox Devourer" that occupies the void...

There is also the "Blood Lord" who stole his chance to travel through time and whose strength has undergone a qualitative change...

There are suddenly many evil cults in the world. They are the root of the old beliefs and the anchor point for the invasion of foreign gods.

Fortunately, the system has awakened an incredible wisdom!

Yes, you read that right! The system has given itself a cheat code!

And as the host...Matthew can completely skip the comprehension steps and directly obtain the results of comprehension!

What does your understanding mean to my understanding? We just have different divisions of labor.

Many years later, when many evil gods were willing to burn the world to death in order to descend upon Hogwarts:

[You have come into contact with the origin of the laws of space. Due to your extraordinary understanding, you have gained the right to manage the crystal wall of the world.]

[You watched the world that was about to fall. Due to your extraordinary understanding, you mastered the endless world destruction chain.]

You can figure out the system, and leave Hogwarts to me!

Looking at the system prompt, Matthew announced domineeringly:

Evil God, get out of my Hogwarts!

…

Dumbledore: Wait, your what?

Traveling through the world of Harry Potter, and reborn as the flesh and blood of Grindelwald and Dumbledore, Black awakened the emotional treasure chest system!

You can get a treasure chest by making others' blood pressure soar!

So...

Black: "Review? You just learned the knowledge, you forgot it so quickly?"

Hermione (deep breath): "Hermione, you have to calm down!" "Ding! Silver treasure chest 1!"

Black: "What a handsome cat!" (Take out the cat toy!)

Professor McGonagall: "!!" "Ding! Gold treasure chest 1!"

Black: "Professor Snape, do you want to eat hot pot together? It's delicious!"

Snape: "This is my cauldron! How dare you! Hufflepuff will be deducted 50 points!" "Ding! Diamond treasure chest 1"

Black: "Professor, my last name is Grindelwald."

Dumbledore: "Huh? What did you say your last name is?" "Ding! Supreme treasure chest 1" Black

: Xiaotang, where is your nose?

Voldemort: Avada...

...

Black: "I'm just a little badger who wants to become stronger, what bad thoughts can I have?" (Spreading hands)

Edward Bedwell, who traveled to the wizarding world of Hogwarts, found himself a descendant of one of the Arthurian Knights of the Round Table. Not only that, but as long as he abides by the knightly virtues, he can gain the corresponding power. Humility and restraint allow him to be absolutely focused. Treating people with sincerity allows him to distinguish between truth and falsehood. The Weak can make him perceive all things. ...... Following the ancient knightly virtues, inheriting the will of his ancestors, studying the "Handbook of Magical Knights", Edward, who entered Hogwarts to study, practiced his own knighthood at all times. He was humble, sincere, and compassionate, and was well liked by his teachers and classmates. He was fearless, unafraid, and impartial, and the dark wizards were feared in front of him. He changed Slytherin and changed Hogwarts

Traveling through the world of Harry Potter, Wayne awakened the Chaos Lord system. As long as he created chaos and violated school rules, he would be rewarded.

Thus, Hogwarts ushered in the most lively period.

Dumbledore: "A student life that does not violate school rules is incomplete, but Wayne... please restrain yourself."

McGonagall: "I thought the Weasley twins were invincible, but I didn't expect Wayne to be braver than them!"

Professor Sprout: "Since he came, the badger has become a flat-headed brother."

Snape: "Azkaban! He should be assigned to Azkaban!"

Voldemort: "Don't bother with the Son of Prophecy, I just want to kill Wayne Lawrence! Now, immediately, right away!"

Wayne spread his hands helplessly: "I'm just a little more lively, why do you keep urging me to graduate?"

After traveling to the Harry Potter world, Vaughn awakened the reputation system. As long as his reputation can be widely spread, he can gain reputation points to add points to the magic he has learned and upgrade it. There are also various tasks that reward magic power and even talents. So... the traveler keeps a low profile and pretends to be a pig to eat the tiger? Follow the plot and become a male mother for the iron triangle? Not possible! Hogwarts, the legendary white devil Dumbledore, the fateful entanglement between Harry and Voldemort... These are the best reputation machines. How can you get rich without stirring up trouble and destroying the plot? Harry: "Vaughn should be the savior. He stopped Voldemort from taking the Philosopher's Stone." Lupin: "Wolfsbane Potion, Werewolf Affairs Committee... Damn, it's a heart-pounding feeling!" Cornelius Fudge: "I want to rule the werewolves, I want to recruit Vaughn Weasley... Damn Dumbledore treats him like his own son, no, he protects him like his own father!" Dumbledore: "Vaughn is a magical genius, but what is more dangerous is his thinking. He always reminds me of someone. I must guide him well..." Vaughn spread his hands: "Don't get excited, resisting Voldemort, recruiting werewolves, challenging the Statute of Secrecy and starting a wizard revolution... I just want to gain some fame!"

"Don't put all your hopes in the 'savior', let me carry the burden!" "Believe me, there is nothing to fear from Voldemort, he was never our true enemy!" Ethan Vincent, winner of the 2008 World War II Award

In the year 1340 of the Shire Reckoning, one year before the departure of the Lonely Mountain expedition, the Grey Wizard had yet to visit the Shire, the Dwarf King was still forging weapons in the Blue Mountains, and the dragon still slept deep within the mountain…

In that very year, a young wizard unexpectedly crossed into Middle-earth, carrying the Hogwarts Sign-in System.

Overnight, Hogwarts Castle rose from the ground, standing tall and majestic on the lands of Middle-earth; flying broomsticks streaked across the skies, becoming a unique sight in this world.

In the wild lands, the legend of a black-robed wizard began to spread silently.

He was a friend of the Elves, a bane to the Orcs, a nightmare to the Trolls, and the lifelong nemesis of the Dark Lord Sauron.

Years later, when the Dark Lord was defeated, the Elves sailed West, and the Age of Men began—Duir, who had signed in at all corners of Middle-earth, looked toward the fabled lands in the West.

[Location: Aman. Would you like to sign in?]

In the shadow of the green lantern, Carl tapped Voldemort's diary with a hook stained with evil despair.

"Poor lonely ghost, you are mine, come out and play, how are we going to carry out this pleasant torture?"

On the day when the owl delivered the Hogwarts admission letter, Carl was excited, but also glad that he did not choose "Harry Potter" when he copied books to make money. He was just one step away from biting into the special melon of Avada. After Professor McGonagall arrived, Carl discovered his talent (external plug-in): "Detect Minerva McGonagall, Animagus Transformation... Match Nidalee, Vastaya Xayah Transformation..."

It is understandable that they can transform into a cat, but why did Professor Snape match Viego? "Forever lost my love! Defeat with a single glance!