[Slytherin][Hermione is the only female protagonist][More rigorous: After living in another world for ten years, the protagonist barely remembers a little about Harry Potter][Not a system]

The false devil:

Gather the Saints to fight against the Muggles.

Occupy Britain and attack the school.

The real devil:

Destroy the world and cause great suffering to all living beings.

Elias traveled through time for eleven years and suddenly found out that he had traveled to the world of Harry Potter and was chosen by the bloodline of the devil!

You only need to gather three of the seven deadly sins: pride, wrath, laziness, greed, envy, gluttony, and ecstasy, and the power of the devil in your blood will automatically summon the devil to possess you and destroy the world!

For the peace of the world,

From that day on, Elias knew that his idle life would be gone forever...

A product of forbidden magic, heir to the Black and White Lords. A powerful body forged from three bloodlines, a brand new soul transcending time. The magical world is in turmoil, as two generations of Dark Lords clash on the same stage, wondering who will reign supreme.

Dumbledore said, "I am your father."

Grindelwald said, "Bullshit, he's obviously closer to me."

Voldemort said, "You are the boss, I accept your position and I won't fight you anymore."

Everything is in Hogwarts: The Forbidden Son of the Black and White Demon King.

"Hello, strange wizard, what is your name?"

"Avada Kedavra."

"Fuck! What are you doing?!"

"...I will call Avada Kedavra, Avada Kendavia."

"...Who gave you this bad name?"

"I heard it's the Department of Mysteries."

"You have a grudge against the Ministry of Magic?"

"No, they don't dare."

"...Then what should I call you? You can't just recite the killing curse when we meet, right?"

"You can call me: the leader of the technological explosion in the wizarding world, the pioneer of Muggle exploration of magic, the ruler of the Hufflepuff kitchen, the ducklord, the younofull..."

Traveling to England in the 1980s, Jon Hart was ready to study and work hard.

Not wanting a letter from Hogwarts, disrupting all his plans.

What is the cruelest thing for a student who is ready to devote himself to scientific research and has carefully planned for more than ten years?

That is to tell him that this world is not only unscientific, but magical!

Gilderoy Lockhart has just become Minister for Magic of the United Kingdom, and there are several uninvited guests in the office.

Dumbledore: “Minister, I have to tell you with great sadness that Moriarty Slytherin is the most hidden person in the European wizarding world!”

Lovegood, editor-in-chief of The Quibbler: “Look Minister, the Hogwarts Riots, the Himalayan Avalanche, the Gringotts Heist, the World Cup Opening, the Nurmengard Bombing, the Azkaban Defection , the Durmstrang riot, these mysteries all point to one person, Moriarty Slytherin!”

Platinum noble Lucius: “On behalf of the pure blood family, I strongly request the minister to launch a wanted request for Moriarty Slytherin! Oh, my minister, don’t look at me with greedy eyes, all pure blood money is taken by Mori Artie’s gone.”

Gilderoy Lockhart showed his signature smile: “Please allow me to introduce to you my young master, the greatest wizard of all time, the master of dawn and darkness, the master of ice and thunder, the legendary god of magic, Moriarty Slytherin!”

This is the story of a little wizard who only has magic in his heart and becomes the big boss behind the scenes in the Harry Potter world.

[Slow-heat layout flow] + [Growth without system] + [Combination of Eastern and Western world cultivation] + [Do not enter unless you like it]

Ever since he lost his beloved pet Nagini, Mr. Voldemort felt that everything was going wrong for him. Looking at the servants kneeling on the ground and crying, the Great Demon roared in his heart that he would make the bastard who stole his pet pay with his life.

A thief who was flirting with Furong and laughing at Zhang Qiu's disastrous defeat in the Quidditch match yawned repeatedly: "Which bastard cursed me behind my back!"

PS: This article is a general logic article. The protagonist relies on the Eastern practice system to surpass Voldemort. Otherwise, even if Hermione is talented, she will be beaten by the Death Eaters. Through planning and cultivating your own power, you will start to grow in the middle stage and dominate the world in the later stage.

He was at Hogwarts, and had just become a Half-Blood Prince.

[Parent-generation; multiple female protagonists; no system]

…

In 1976, 16-year-old Severus Snape welcomed a new life.

That year, Voldemort had not yet split his soul into seven pieces.

That year, Nagini was still hiding in the forests of Albania.

That year, Pandora was still doing wonderful experiments at Hogwarts.

That year, Ms. Rosmerta was in her prime and very graceful.

That year, Snape decided to experience this wonderful world.

Burning souls, casting forbidden spells. "Black Emperor" Klein Grindelwald successfully traveled through time and started his third life. This time, he wants to shut up all doubts and prejudices and ascend to the highest Mithril Throne in the magic world in another way! "Knowledge is the eternal pursuit, and power is just a by-product in the process of seeking truth." "Magic is neither good nor bad, neither black nor white.

Browder of the third generation was reborn in the world of Harry Potter.

The legacy of the previous two lives gave Browder a stronger foundation in this life.

But… the water in Harry Potter’s world is really deep!

[Slice-of-life story + no female lead + research]

Lin Yi, whose love for astronomy is etched into his soul, is born into the HP world with all the knowledge from his previous life and a super brain that can "remember everything he sees".

He thought he could easily become an academic star in the magical world, but he discovered that wizards' understanding of the brilliant starry sky above them was still stuck in the primitive stage of "divination of good and bad fortune".

How can we tolerate this?

With a wave of his wand and a telescope in hand, his goal is to elevate astronomy from a "required, easy subject" to a "cutting-edge magical engineering" capable of changing the magical world!

From drawing precise star maps imbued with magic to developing powerful spells that draw upon the power of the stars;

From analyzing the probability theory behind divination to creating astrological artifacts based on constellations...

While Voldemort and his followers were still obsessed with pure-blooded people on Earth, a scholar under the stars was quietly turning the entire universe into his magical laboratory.

This is the story of a hardcore academic genius who, in a magical world, uses scientific thinking to climb the magical technology tree, and incidentally crushes everyone else in the process.