Erin Prince, a sixth-year student in the HP universe, transmigrates to the Douluo Continent a second time due to an attack by Death Eaters, becoming the adopted son of Chief Martin of Tengteng Village. From the 'Azure Staff' skilled in binding to the 'Staff of Ten Thousand Laws' that grants wishes, he initially just wanted to live a simple life. Who knew that his actions would lead him down a path of controlling the rules with magic? Erin: "Give me a fulcrum, and with soul power as my source, I will move the world."

[Some settings have been added to the magic system, which may affect the settings of the original work]

Arthur Blake.

(The only legitimate heir of the Black family and an important partner of the "loyal and brave" Malfoy family.)

Arthur did not practice or use the Dark Arts like most of the Black family.

On the contrary, Arthur learned a kind of magic that was rarely mentioned in the entire Harry Potter world, magic related to lightning.

This was the ability of Thunder Magic, possessed by a max-level character he used in the game he played before crossing over.

Originally, he wanted to wait until his thunder technique was perfected, then appear out of nowhere and shout to Voldemort, "Use thunder to shatter the darkness!!!"

However, Voldemort, who had lost his brain, not only wanted to steal the Philosopher's Stone, but also wanted to control him.

Arthur thus encountered his first crisis that threatened his life.

However, Arthur, who turned a disaster into a blessing, found another way besides thunder - soul magic.

------

Voldemort had marked himself with the most powerful enemy he had ever faced, once again fulfilling the prophecy about the savior without his knowledge.

At the moment of his death, he felt immense regret in his heart.

It was then that he remembered what the famous five-star-rated General MacArthur once said: "At the beginning, I thought I knew everything and could control everything; but later I found that the fact was that I knew nothing."

"Come with me."

"I'll be your teacher before you enter Hogwarts, introducing you to the vibrant wizarding world and all sorts of wizards."

"I'll teach you everything I know: potions, spells, transfiguration, even the Dark Arts."

"And if one day you grow up to be a truly great savior, then point your wand at me."

"Use all the methods I've taught you, use all you have, and kill me!"

"Do you have the guts?"

"Lily Evans and James Potter's son—"

"Harry Pott!"

In a narrow alley drenched in rain,

Severus Snape, with smooth, fresh, non-greasy black hair, holding a black umbrella, reached out his hand to the nine-year-old savior of the wizarding world, who sat on the ground, his face filled with fear and bewilderment.

[OC warning + many personal settings + no female lead]

Since arriving in this magical world, Bai Yang has had only one goal.

That is to graduate from Hogwarts safely.

So, anyone who prevents him from graduating should just die!

When a science PhD travels to Hogwarts, he discovers that magic is just another form of energy—as long as there is a theory, it can be quantified, copied, and enhanced!

From analyzing the structure of wands to developing magic circuits and energy arrays, he ushered the wizarding world into the "era of technological magic."

Voldemort was sent to the research institute by him, and Dumbledore asked him to give a public lecture on "Magical Physics".

However, this was just the beginning—when he broke through the dimensional barrier, new worlds began to emerge:

In Middle-earth of The Lord of the Rings, he single-handedly suppressed Sauron;

On the continent of The Witcher, he combines magic and runes through alchemy;

In the Marvel Cinematic Universe, he even got Tony Stark to come and get inspiration from him;

After Harry Potter, he will eventually become the supreme god of magic in all the heavens and the myriad worlds!

Multiverse, academic genius, magic and technology, fast-paced leveling-up, multi-world travel, harem + conquest storyline

Many people spend their entire lives trying to find their true talents, but Seamus Finnigan's talent is undeniable. Just imagine, 30 years from now, who could stand up to me, the Demolition Man? Dumbledore? Grindelwald? Voldemort? Even Merlin would have to retreat. ...Ahem, keep a low profile. Keep a low profile.

[Snake Court] + [Samurai Zero] + [Multiple Heroines] + [Rise of Muggles] + [Power] + [HP Natives]

Daud Wick, who has lost his memory, thought he could become the best killer in the world with his time ability, but one day he entered the magic school Hogwarts, and thought being a wizard killer would be a good idea.

But time is determined by fate and is not in our control. The twists and turns of fate are far beyond the imagination of ordinary people.

First-year Nicolas Flamel wants to sign an unbreakable vow with him, and Grindelwald wants him to inherit the Saint

The organization I worked for before the second year directly sent people to break into Hogwarts and finally escaped unscathed.

In the third year, a behemoth that swept the world surfaced and declared war on the entire wizarding world.

What will happen in the future?

"The road to destruction is shorter than you can imagine"

So said the third generation Dark Lord of Britain, Dowd Wick.

(The first grade will probably stick to the original novel, but starting from the second grade, the plot will be original and completely subvert the original novel)

(Without the system, tags cannot be deleted!)

Have we arrived in the world of Harry Potter?

Or is he Malfoy's twin brother?

Watch how I teach this arrogant younger brother a lesson!

Malfoy: My brother is even better than Dumbledore!

Dumbledore: He won't be the next Dark Lord, but he will be the next White Lord.

Harry: My mentor in life! I must become stronger!

Snape: Your whole family is no good! Wait, no, he's his godfather…

"Albus Dumbledore made two great mistakes in his life: one was Tom Riddle, and the other was Jim Lynch." Jim Lynch, the "Mist Hangman," a forbidden legend who hunted hundreds of dark wizards, was locked in the Forbidden Forest by Dumbledore himself. When the savior Harry enrolled in school, he tore open his cage and returned to the wizarding world as a professor. Dumbledore regarded him as a hidden danger, and the Ministry of Magic became his chess game, with death walking with him. When the sky of Hogwarts was set on fire, Lynch stepped out of the fire and smiled elegantly at Voldemort: "Hello, Tom, did you miss me?"

[HP Fanfiction + Single or Multiple Female Protagonists + System + Snake Court + Behind the Scenes + Slow Heat]

[ps: Don’t join Ron’s party, I don’t like this character]

My name is Leggett Black.

After crossing over, I obtained a system....

It was also from this day that the world began to emit shrill screams.

Tang: Damn it, who stole my true energy!!!

Yu: "Ahhhhhhhhhhh!!! Oh my god!!!"

Jia Zhang: "Old Jia, please come back and take this thief away!!!"

In short, this is a story about exchanging everything in the Harry Potter world...